Question 4 (0.5 points) Consider the following hypotheses: Ho: mean = 5 H1: mean < 5...

Question 4)

We have given: n=25 , population standard deviation = 1.2 and sample mean = 4.68

For finding the P value in Ti-84 plus calculator we please follow the commands,

Here population standard deviation is known hence we can use Z test.

1. Press STAT -----------> Select TESTS

2. In TESTS select 1) Z - Test ---------> Stats

3. Please enter the required value, that is-

= 5

= 1.2

X bar= 4.68

n = 25

< ₀ and hit the calculate button so we get -

P value = 0.0912

Question 5)

n = 49 , x bar = 10.5 , = 9 , = 14

For the given data we get -

P value = 0.2266

Question 6)

n = 36 , x bar = 2.8 , = 7 , = 18

For the given data we get -

P value = 0.1615