A random sample of 10 independent healthy people showed the

A random sample of 10 independent healthy people showed the following body temperatures (in degrees Fahrenheit) 98.4 Test the hypothesis that the population mean is not 98.6°F; use a significance level of 0.05 Which of the following correctly states Ho and H.? 98.7 99.0 96.7 98.7 98.1 97.2 99.2 98.4 97.3 Ho: = 98.6 Ha: 98.6 Oc. Ho: #98.6 Ha: = 98.6 Ho: =98.6 Ha: 98.6 Ho: u298.6 Ha:

Solution

H0: mu=98.6

H1: mu not equl to 98.6

t=xbar-mu/sd/sqrt/(n-1)=-1.63

Do not reject the null hypothesis. Since p value is > 0.05, the answer is A.

Hypothesis Test: Mean vs. Hypothesized Value
	98.6000	hypothesized value
	98.1700	mean Data
	0.8354	std. dev.
	0.2642	std. error
	10	n
	9	df
	-1.63	t
	.1380	p-value (two-tailed)