at BC financial aid allots a textbook stipend by claiming that the average textbook at BC bookstore costs $ $
Suppose that BC financial aid allots a textbook stipend by claiming that the average textbook at BC bookstore costs
$
$
50.52. You want to test this claim. The null and alternative hypothesis in symbols would be:
H
0
:
μ
≤
50.52
H
0
:
μ
≤
50.52
H
1
:
μ
>
50.52
H
1
:
μ
>
50.52
H
0
:
p
≥
50.52
H
0
:
p
≥
50.52
H
1
:
p
<
50.52
H
1
:
p
<
50.52
H
0
:
μ
=
50.52
H
0
:
μ
=
50.52
H
1
:
μ
≠
50.52
H
1
:
μ
≠
50.52
H
0
:
μ
≥
50.52
H
0
:
μ
≥
50.52
H
1
:
μ
<
50.52
H
1
:
μ
<
50.52
H
0
:
p
=
50.52
H
0
:
p
=
50.52
H
1
:
p
≠
50.52
H
1
:
p
≠
50.52
H
0
:
p
≤
50.52
H
0
:
p
≤
50.52
H
1
:
p
>
50.52
H
1
:
p
>
50.52
The null hypothesis in words would be:
The average price of textbooks in a sample is
$
$
50.52
The average of price of all textbooks from the store is greater than
$
$
50.52.
The proportion of all textbooks from the store that are less than 50.52 is equal to 50%
The average of price of all textbooks from the store is less than
$
$
50.52.
The average price of all textbooks from the store is
$
$
50.52
Based on a sample of 170 textbooks at the store, you find an average of 50.72 and a standard deviation of 22.6. The point estimate is: (to 3 decimals) The 90 % confidence interval (use z*) is: to (to 3 decimals) Based on this we:
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