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Chapter 7 / Exercise 1
Finite Mathematics for the Managerial, Life, and Social Sciences: An Applied Approach
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The following information is for use with questions 11 to 13 A company has a large staff of machine operators. The Manager selects a random sample of eight male machine operators and finds that during a particular year the hours of overtime they worked were: 142 127 171 137 161 183 148 Q11 The estimated mean and standard deviation of all the male operators respectively are: 124 A. 149 and 19.6
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Chapter 7 / Exercise 1
Finite Mathematics for the Managerial, Life, and Social Sciences: An Applied Approach
Tan Expert Verified
B. 149 and 21.0 C. 145 and 19.6 D. 145 and 21.0 ANSWER: B Q12 Assuming normal distribution, the 95% confidence interval for the population mean is:
Q13 Assuming normal distribution, the 99% confidence interval for the population mean is:
Q14 If a pair of dice are rolled the probability of getting a double is: C
Q15 1) The heights of ten male students (in inches) in a college biology class are listed below. Find the mean. 71 67 67 72 76 72 73 68 72 72 A. 67 inches B. 71 inches C. 68 inches
D. 72 inches ANSWER : B Q16 A numerical summary of a population is a
Q17 The commuting times of ten employees (in minutes) are listed below. Find the mode score. 65 66 67 66 67 70 67 70 71 68
Q 18 Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5? 5 20
Q 19 A random sample of 100 voters in a community produced 59 voters in favor of candidate A. The observed value of the test statistic for testing the null hypothesis : 0.5 o H p versus the alternative hypothesis : 0.5 a H p   is: a) 1.80 b) 1.90 c) 1.83 d) 1.28 ANSWER A Q 20. The degrees of freedom for error in ANOVA are:
1
Q 21. Analysis of Variance (ANOVA) is a test for equality of:
Q 22. Type II error is defined as:
Q 23. The hypothesis of most interest to the researcher is: (a) the alternative hypothesis. (b) the null hypothesis. (c) both hypotheses are of equal interest. (d) Neither hypothesis is of interest. ANSWER A Q 24.
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