Aresearcher believes that women today weigh less than in previous years. to investigate this belief, he randomly samples 41 adult women and records their weights. the scores have a mean of 111 lbs. and a standard deviation of 12.4. a local census taken several years ago shows the mean weight of adult women was 115 lbs.
refer to exhibit 13-1. what do you conclude, using a = 0.011 tail?
a) accept h1
b) accept h0
c) reject h0
d) retain h0

Option B) Accept            

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 115 lbs

Sample mean, =  111 lbs

Sample size, n = 41

Alpha, α = 0.01

Sample standard deviation, s = 12.4 lbs

First, we design the null and the alternate hypothesis

We use One-tailed t test to perform this hypothesis.

Formula:

Putting all the values, we have

Now,

Since,                  

We fail to reject the null hypothesis and accept the null hypothesis.

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step-by-step explanation:

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