Mathematics, 06.05.2020 06:32 bjbass899
The amounts of time employees at a large corporation work each day are normally distributed, with a mean of 7.5 hours and a standard deviation of 0.35 hour. Random samples of size 23 and 35 are drawn from the population and the mean of each sample is determined. What happens to the mean and the standard deviation of the distribution of sample means as the size of the sample increases?a) If the sample size is n=23, ind the mean and standard deviation of the distribution of sample means (type as interger or a decimal)b)If the sample size is n=35, find the mean and standard dviation of the sidtribution of sample meansean(type as interger or a decimal)=standard deviation(round to the nearest hundredth)=c) The mean (stays the same/and the standard deviation) (both decrease/both increase/ the standard deviation increase/ the standard deviation decreases)
Answers: 3
Mathematics, 21.06.2019 18:00, alyssatamayo641
What is the solution of log2 (3x - 7) = 3? 4 5
Answers: 1
Mathematics, 21.06.2019 23:10, nekathadon
Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?
Answers: 3
Mathematics, 22.06.2019 01:20, ctyrector
Anita has a success rate of 80% on free throws in basketball. she wants to know the estimated probability that she can make exactly four of five free throws in her next game. how can she simulate this scenario? categorize each simulation of this scenario as correct or incorrect.
Answers: 2
Mathematics, 22.06.2019 02:20, officialrogerfp3gf2s
Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test
Answers: 2
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