what is the relative frequency for those salespersons that earn from $1,600 up to $1,800?
Bones Statistics for Business and Economics 8th Edition Quiz 32
A survey includes a question regarding marital status that has the following responses: unmarried, married, divorced, separated, or widowed. What is the scale of measurement for this question?
A. Ratio
B. Interval
C. Ordinal
D. Nominal
The operation of personal and business investments is measured as a percent, "render on investment." What type of variable is "render on investment"?
A. Qualitative
B. Continuous
C. Aspect
D. Discrete
The names of the positions in a corporation, such equally main operating officer or controller, are examples of what type of variable?
A. Qualitative
B. Quantitative
C. Interval
D. Ratio
A company was studying the demographics of their customers. As part of the study, they collected the following variables: gender, marital status, credit rating (low, medium, high), annual income, and historic period. Label each variable as qualitative or quantitative, detached or continuous, and nominal, ordinal, interval, or ratio.
Refer to the following distribution of commissions:
What is the relative frequency of those salespersons that earn $i,600 or more than?
A. 25.v%
B. 27.5%
C. 29.v%
D. 30.8%
For a frequency distribution of quantitative data, if every individual, object, or measurement can be assigned to a course, the frequency distribution is __________.
For any data set, which measures of primal location have but one value?
A. Style and median
B. Mode and mean
C. Mode and standard deviation
D. Mean and median
If the variance of the "number of daily parking tickets issued is 100, the standard deviation is defined as the _____________.
A. "Number of daily parking tickets"
B. "Number of daily parking tickets" squared.
C. Absolute value of the variance of the "number of daily parking tickets"
D. Square root of the variance of the "number of daily parking tickets"
The weights (in thousands of kilograms) of vii shipping containers are 9.5, 10.3, xi.0, 10.4, 10.5, 11.2, and nine.ii. What is the mean difference?
A. 0.543 kg
B. 0.625 kg
C. 0.53 kg
D. five.50 kg
The ______________ is used to measure the relative symmetry of a distribution.
The relative symmetry of a distribution is measured with the coefficient of skewness.
What does 
A. 640
B. 36
C. 10
D. 120
A study of interior designers' opinions with respect to the virtually desirable principal color for executive offices showed that:
What is the probability that a designer does not adopt xanthous?
A. 0.000
B. 0.765
C. 0.885
D. one.000
Ane card volition be randomly selected from a standard 52-carte du jour deck. The probability that it volition be the jack of hearts is ____.
Carlson Jewelers permits the return of their diamond nuptials rings, provided the return occurs within two weeks of the purchase date. Their records reveal that 10% of the diamond wedding rings are returned. Five different customers purchase a wedding ring. What is the probability that none of the customers return a ring?
A. 0.250
B. 0.073
C. 0.590
D. 0.500
For the following probability distribution:
There are 10 flights from Minneapolis to St. Cloud each twenty-four hour period. The probability that whatsoever one flight is tardily is 0.05. Using the binomial probability formula, what is the probability that ane or more are late?
Which of the following is true in a normal distribution?
A. The mean equals zero.
B. The mode and the third quartile are equal.
C. The hateful divides the distribution into ii equal areas.
D. The area under the curve is 0.68.
A major credit menu visitor has determined that customers charge between $100 and $1,100 per month. If the average monthly corporeality charged is uniformly distributed, the percent of monthly changes between $311 and $889 is _______.
What is special about the standard normal distribution?
For a sampling distribution of the means, _______% of the ways would be between 2.58 standard deviations.
A survey of an urban academy (population of 25,450) showed that 750 of 1,100 students sampled attended a home football game game during the season. Using the ninety% level of confidence, what is the confidence interval for the proportion of students attending a football game?
A. [0.7510, 0.8290]
B. [0.6569, 0.7031]
C. [0.6659, 0.6941]
D. [0.6795, 0.6805]
The Nile Superstore is conducting a survey of consumer preferences for a new wireless eastward-volume reader. A sample of 160 people reveals that 120 would buy the new reader. Gauge the value of the population proportion.
A car is ready to fill the small-scale-size packages of M&M candies with 56 candies per bag. A sample revealed: three bags of 56, two bags of 57, one handbag of 55, and two bags of 58. To test the hypothesis that the hateful candies per handbag is 56, how many degrees of freedom are there?
A. nine
B. ane
C. 8
D. 7
For a null hypothesis, H0: = 4,000, if the i% level of significance is used and the z-exam statistic is +half dozen.00, what is our decision regarding the null hypothesis?
A. Practice not decline H0.
B. Reject H0.
C. Refuse H1.
D. None Apply.
For a ii-tailed exam with a 0.05 significance level, where is the rejection region when north is large and the population standard deviation is known?
A. Betwixt 1.960
B. Between 1.645
C. Greater than +one.960 and less than -1.960
D. Greater than +1.645 and less than -i.645
A contempo written report focused on the amount of money single men and women salve monthly. The information is summarized adjacent. Assume that the population standard deviations are equal.
At the .01 significance level, do women salvage more money than men? What is the test statistic for this hypothesis?
A. z-statistic
B. t-statistic
C. p-statistic
D. df-statistic
A sample of 250 adults tried the new multigrain cereal "Wow!" A total of 187 rated it as first-class. In a sample of 100 children, 66 rated it as excellent. Using the 0.1 significance level, the researcher wishes to show that adults like the cereal amend than children. Which of the following is the alternate hypothesis?
A. H1: πA = πC
B. H1: πA < πC
C. Hane: πA > πC
D. H1: πA ≠ πC
A national manufacturer of ball bearings is experimenting with two dissimilar processes for producing precision brawl bearings. Information technology is important that the diameters be every bit close equally possible to an industry standard. The output from each process is sampled and the average mistake from the industry standard is measured in millimeters. The results are presented next.
The researcher is interested in determining whether there is evidence that the ii processes yield different average errors. The population standard deviations are unknown but assumed equal. What is the alternating hypothesis?
A. Hone: A = B
B. H1: A ≠ B
C. Hone: A ≤ B
D. H1: A > B
When the population standard deviations are unknown, the purpose of pooling the sample variances when testing the deviation between 2 populations is to ___________.
The purpose of pooling the sample standard deviations is to find the best point judge of the common population variance.
A committee that is studying employer-employee relations proposed that each employee would rate his or her immediate supervisor, and in turn the supervisor would rate each employee. To test if the reactions to the survey for office and plant personnel were the same, 120 part personnel and 160 plant personnel were selected at random. Seventy-8 of the office personnel and 90 of the institute personnel were in favor of the proposal. What is the value of the examination statistic? Round to two decimal places.
A chart that shows the relationship between a continuous dependent variable and a continuous independent variable is chosen a ____________.
Approximately ______% of the observations lies within two standard errors of the regression line.
Click to reveal this answer.
95
Think that we presume the deviations around the regression line follow a normal distribution. Thus, 95% of the observations will be inside plus or minus two standard errors of the regression line.
If all the plots on a scatter diagram prevarication on a straight line, what is the standard error of gauge?
A. -ane
B. +one
C. 0
D. Infinity
In the equation, Ŷ = a + bX, what is Ŷ?
A. It is the gradient of the line.
B. It is the Y intercept.
C. It is the predicted value of Y, given a specific 10 value.
D. It is the value of Y when X = 0.
A regression assay yields the following information:
Compute the 95% prediction interval when 10 = 4.
A. 0.0, 4.05
B. 2.67, 5.33
C. four.118, 12.226
D. 6.873, 9.527
If there is perfect correlation, the value of the correlation coefficient is __________.
Using the following regression analysis:
What is the rest mean foursquare?
High school students were interested in a teacher'southward claim that the longer the length of time (hours) that a student studies for a test, the higher the test score. The students nerveless the data and the teacher did the regression analysis with the post-obit results.
What is the regression mean foursquare?
The Anderson-Darling test for normality compares a cumulative normal distribution to a cumulative distribution of the ___________ data.
Which chi-foursquare distribution would be closest to a normal distribution?
A. The distribution with iii degrees of liberty.
B. The distribution with 12 degrees of freedom.
C. The distribution with 15 degrees of liberty.
D. The distribution with 9 degrees of liberty.
For any chi-foursquare goodness-of-fit examination, the number of degrees of freedom is plant past ______.
A. n - yard - i
B. k - 1
C. north + 1
D. n + thou
A recent study of the relationship between social activity and education for a sample of corporate executives showed the following results.
Based on the analysis, what tin be concluded?
A. Social action and education are correlated.
B. Social activity and instruction are non related.
C. Social activity and didactics are related.
D. No determination is possible.
Recently, students in a marketing research class were interested in the driving behavior of students. Specifically, the marketing students were interested in finding out if exceeding the speed limit was related to social activeness. They collected the following responses from 100 randomly selected students:
The degrees of liberty for the analysis are ________.
A. 1
B. two
C. 3
D. four
Six people have declared their intentions to run for a seat on the school board in the side by side local ballot. A poll is conducted during the campaign amidst 1,020 randomly sampled voters to make up one's mind if there is any clear preference amid the voters. The responses are shown side by side.
What is the critical value at the 1% level of significance?
We are interested in knowing if the following frequency distribution is usually distributed. The population mean and standard departure of the data are 600 and 160, respectively.
If the distribution was normally distributed, what is the probability that an observation would be a fellow member of the "400 upward to 600" class?
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