.II Globe '5'? 9146 PM E elms.sti.edu STI Education Services Question 1 of 50 2 Points Which of the following statements is FALSE? Select the correct response: There is a different z-value (i.e., critical value) used for each level of alpha. Alpha is the proportion in the tails of the distribution that are outside of the condence interval. In practice, the population mean is an unknown quantity that is to be estimated. It is possible to construct a 100% confidence interval estimate for the population mean. Connue > all Globe 9:49 PM 56% O & elms.sti.edu 84 = STI Education Services Group Question 5 of 50 2 Points The probability distribution of random variable, X, is defined as follows: X 1 2 3 4 Probabilit 10. 10. 0 13 What is the expected value of the probability distribution? Select the correct response. O 2.7 O 2.6 O 2.5 O 2.4 .II Globe '5' a elms.sti.edu STI Education Services Question 6 of 50 2 Points Which of the following terms refers to countable numbers such as integers or whole numbers? Select the correct response: Normal Discrete Poisson Binomial e o n .II Globe '3' 10:03 PM E elms.sti.edu STl Education Services. Group .. Question 18 of 50 2 Points A hypothesis test has an alternative hypothesis that more than 10% of a population is left- handed. The pvalue for the test is calculated to be 025. Which statement is correct? Seiect the correct response: It can be concluded that more than 25% ofthe population is left-handed. It can be concluded that exactly 25% ofthe population is left-handed. It can be concluded that more than 10% of the population is lefthanded. It cannot be concluded that more than 10% of the population is left handed. .II Globe '3' 10:07 PM a elms.sti.edu STI Education Services I Question 21 of 50 2 Points Which best describes the upper endpoint of a condence interval? Select the correct response: Point estimate plus margin of error Point estimate Point estimate times margin of error Point estimate minus margin of error e o n Globe 10:09 PM 7 63% O elms.sti.edu 84 4 STI Education Services Group Question 22 of 50 2 Points Which of the following is the slope in the regression equation Y = 21 - 3X? Select the correct response: O -21 O -3 O 21 O 3 Status Buse C.II Globe '3' 10:11 PM a elms.sti.edu STI Education Services Question 26 of 50 2 Points Which of the following refers to the highest point on the normal curve? Select the correct response: Mode Median Standard deviation Mean Status e o e .II Globe '3' 10:18 PM a elms.sti.edu STI Education Services I Question 32 of 50 2 Points In order to compute any sample statistic in a sample of size 25, how many sample values are free to vary? Select the correct response: 24 50 25 e o n .I Globe '3' 10:22 PM E elms.sti.edu STl Education Services Group I Question 37 of 50 2 Points An airplane has a front and a rear door, both of which are opened to allow passengers to exit when the plane lands. The plane has 100 passengers aboard. Let X = the number of passengers exiting through the front door. What is the appropriate distribution for the random variable X? Select the correct response: A binomial distribution with mean 50. None of the above. A normal distribution with a standard deviation of 5. A binomial distribution with n = 100 trials but success probability not equal to 0.5. all Globe 10:26 PM 67% O A elms.sti.edu = 84 STI Education Services Group Question 42 of 50 2 Points The following table describes the probability distribution for the random variable X that counts the number of times a customer visits a grocery store in a 1-week period: Visits O 12 3 4 or more P(Visits) 10.1 0.25 0.3 2 0.1 What is the value of the entry in the table for 3? Select the correct response: O 0.55 O 0.75 0.25 O 0.22.II Globe '3' 10:26 PM a elms.sti.edu STl Education Services Group LMS Assessment Question 43 of 50 2 Points Which of the following is a hypothesis test in which rejection of the null hypothesis occurs for values of the point estimator in either tail of the sampling distribution? Select the correct response: Null hypothesis Alternative hypothesis One-tailed test Two-tailed test e o n Globe 10:26 PM 68% O elms.sti.edu 84 4 STI Education Services Group LMS Assessment Question 44 of 50 2 Points In the regression equation Y = 75.65 + 0.50X, the intercept is ? Select the correct response: O Indeterminate O 75.65 O 0.50 O 1.00 IS C.I Globe '3' 10:29 PM a elms.sti.edu STl Education Services Group Question 46 of 50 2 Points Which of the following refers to a formula that gives the probability function? Select the correct response: Probability Mass Function Normal distribution 0 Probability Histogram Discrete distribution Status .II Globe '3' 10:31 PM @ 699' a elms.sti.edu on E STl Education Services Group I Question 48 of 50 2 Points Which of the following refers to an experiment whose outcome is random and can be either of two possible outcomes a \"success\" or a \"failure.\" Select the correct response: Discrete random variable Bernoulli trial Continuous variable Poisson e o n