sample days and finds a sample average for the number of rther analysis of the data, it appears reasonable to assume the popu -test statistic is calculated to test whether the true population mean rhat is the approximate p-value of this test? 0.0125 < p<0.025 0.025

sample days and finds a sample average for the number of rther analysis of the data, it appears reasonable to assume the popu -test statistic is calculated to test whether the true population mean rhat is the approximate p-value of this test? 0.0125 < p<0.025 0.025

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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21)
Job satisfaction as a function of a work schedule was investigated in different factories. In the first factory, the employees are on fixed shift system while in the second factor, the workers have rotating shift system. Using the data in the table below, determine if there is a significant difference in job satisfaction between the two groups of workers. Use 0.01 level of significance. Shift Schedule Mean Standard Deviation Sample size Fixed 7.43 2.42 23 Rotating 6.18 2.15 29
Already have the first three done, need help with the last few! Thanks!
sample data is included
Find the P-values while (hypothesis) testing mean.The principal of a school wants to test the average IQ of students at her school. She administers an IQ test to 64 randomly selected students. Among the sampled students, the sample average IQ is 108 and the sample standard deviation is 10. a) What is the P-value when testing the hypothesis that the average IQ is at least 110?P-value = (round to 4 decimals)b) What is the P-value when testing the hypothesis that the average IQ is at most 110?P-value = (round to 4 decimals)c) What is the P-value when testing the hypothesis that the average IQ is not 110?P-value = (round to 4 decimals)
Women N Mean Standard Deviation New Drug 40 38.88 3.97 Placebo 41 39.24 4.21 Men N Mean Standard Deviation New Drug 10 45.25 1.89 Placebo 9 39.06 2.22 There is no statistical difference between the new drug and the placebo in women. Is there a significant difference between the placebo and the new drug among men in this study? The pooled standard deviation is equal to 2.05. Please complete the 5 steps of hypothesis testing. Remember that the n of both groups is less than 30.
The ___________ is a weighted average of the Standard Deviations of the conditions of an IV in an independent samples t-test. Pooled estimate of the Standard deviation Standard deviation of the difference Population Standard deviation Standard error of the difference
0 123 ess is functioning properly. significance. 5 workers from one company But a general perception is 1 of significance mnle 6.32 Jeffery, a high school swimmer, swims the 25-yard freestyle with a mean time of 16.43 seconds without using goggles. After his father bought him goggles, Jeffery swam the 25-yard freestyle 15 times. After the 15 swims, Jeffery's mean time was 16 seconds and sample standard deviation was 2 seconds. His father thought the goggles helped Jeffery swim faster. Test his father's hypothesis using a 5% level of significance. Assume that the sample of measurements are from a normally distributed population. 6.30 suburb.
When working out the standard deviation, do you use the population equation or the sample equation? I.e do you divide by 10 or 9? Thanks
we have a set of 1000 values with average 4 and standard deviation 3.( this is population data) find out the sum of values of this data set is __________
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A survey information given below, Sample mean = 5.5, s=2.517, df-8 and confidence level 95% (coresponding test statistic value is 2.303). Based on this information answer the folowing: Which test is appropriate, z-test or t-test? Type either "z-test" or "t-test" A What was the sample size? A Calculate the margin of error. (Report two decimal point, #.##) A Calculate the confidence interval-write lower and uppler value using comma ",". (Report two A If the df decimal point: #.##, #.##) increases to 30 then what will impact on the margin of error? Write either "increase" A If the df or "decrease" or "no change" increases to 30 then what will impact on the confidence interval? Write either "wide" or "narrow" or "no change"