Population Mean Assignment | Professional Writing Services
Use the following information to write the corresponding null and alternative hypothesis:
a. A sample mean of 23 is statistically different from a population mean of 30
b. A sample mean of 56 is less than the population mean of 70
c. A sample mean of 75 is greater than the population mean of 70
Be sure to show the relationship!
I have finished analyzing the data from a recent study.
There are 25 subjects in the sample
The mean of the sample is 75
The standard deviation is 4.7
Please answer the following:
a. What is the standard error 0 the mean for these data?
b. What are the 95% and 99% confidence intervals
c. What is the probability of obtaining by chance the following:
i. A mean less than 72
ii. A mean less than 74
iii. A mean less than 76
iv. A mean less than 78
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