1. The mean number of days it takes an employer to approve medical leave is believed to be about ten. Members of a...
the mean number of sick days an employee takes per year is believed to be about 10. Members of a personnel department do not believe this figure. They randomly survey B employees. The number of sick days that the mean number is about 107 Conduct a hypothesis test at the 5% level. they took for the past year are as follows: 12; 6; 14 5 11; 6;10. Lt X the number of sick days they took for the past year....
32. Ten years ago the mean number of days of skill training per year provided to employees by American businesses was 13.2. A researcher believes it to be less now. Test this assertion at the 1% level of significance, using the following information: a random sample of 49 major employers produced a mean number of days of skill training per year of 11.9 days, with standard deviation 3.4 days. (a) State the null and alternative hypotheses for the test. (b)...
The mean number of sick days an employee takes per year is believed to be about 10. Members of a personnel department do not believe this figure. They randomly survey 8 employees. The number of sick days they took for the past year are as follows: 10; 5;15; 5; 11; 10; 8; 10. Let x the number of sick days they took for the past year. Should the personnel team believe that the mean number is about 10? Conduct a...
1) Compute the Population Mean, Variance and standard Deviation of the 20 men in seconds the subjects stayed balanced. 2) Identify a random sample of 10 men and find the sample mean (avaerage balance time in seconds) 3) Find he Median number of days per week exercised. 4) Find the Mode of the favorite exercise. 5) Construct a complete hypothesis test and determine if the two groups (population mean vs sample mean) have significantly different balance using Alpha Level ->...
of 6 23. The pregnancies of pigs are normally distributed with a mean of 110 days and a standard deviation of 11 days. What is the probability that a pregnancy lasts less than 108 days? a. Sketch the graph b. Find the probability 24. A study of the amount of time it takes a to cook a steak shows that the mean is 7 minutes and the standard deviation is 2 minutes. If 14 steaks are randomly selected, find the...
1. We reject the null hypothesis only when: a. our sample mean is larger than the population mean. b. the p value associated with our test statistic is greater than the significance level of the test we have chosen. c. our sample mean is smaller than the population mean. d. the p value associated with our test statistic is smaller than the significance level of the test we have chosen. 2. In a study of simulated juror decision making, researchers...