Test the claim that the mean GPA of night students is significantly different than 2.7 at the 0.01 significance level.
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Q: Test the claim that the mean GPA of night students is significantly different than 2.8 at the 0.01…
A:
Q: You work for a soft-drink company in the quality control division. You are interested in the…
A: Given : 11.97 , 12.04 , 12.03 , 12.01 , 12.09 , 11.84 , 11.92 , 12.01 , 11.89 , 11.95 , 12.01 ,…
Test the claim that the
The null and alternative hypothesis would be:
H1:p≠0.675
H1:μ<2.7
H1:μ>2.7
H1:p<0.675
H1:μ≠2.7
The test is:
Based on a sample of 45 people, the sample mean GPA was 2.73 with a standard deviation of 0.02
The test statistic is: (to 4 decimals)
The p-value is: (to 4 decimals)
Based on this we:
- Fail to reject the null hypothesis
- Reject the null hypothesis
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- You wish to test the following claim (Ha) at a significance level of α=0.10. Ho:μ=72.2 Ha:μ≠72.2You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data: Column A Column B Column C Column D Column E 102.6 66.5 52 59.2 91.1 100.3 47.4 77.7 70.8 94.7 83.9 107.6 87.7 65.4 82.3 88.2 87.7 68 60 95.3 78.4 72.9 101.4 58.3 59.2 100.3 71.6 76.1 74.9 74.9 56.2 88.2 77.7 72.9 90.6 81.1 55 86.4 78 53.6 57.3 86 94 50 85.1 105.6 92.2 70.3 73.7 59.2 81.9 78 86.4 75.7 86 What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... less than (or equal to) α greater than αE= Over the years, the mean customer satisfaction rating at a local restaurant has been 65. The restaurant was recently remodeled, and now the management claims the mean customer rating, u, is not equal to 65. In a sample of 32 customers chosen at random, the mean customer rating is 76.2. Assume that the population standard deviation of customer ratings is 22.8. Is there enough evidence to support the claim that the mean customer rating is different from 65? Perform a hypothesis test, using the 0.10 level of significance. (a) State the null hypothesis H, and the alternative hypothesis H,. Ho Aa O
