Answer:
a) T test
b) Claim
because critical value is not equal to test statistic then reject null hypothesis
Step-by-step explanation:
Construction of hypothesis
H₀ : p = 75
H₁ : p ≠ 75
Here Standard deviation = 7
sample = n = 50
Average = x-bar = 78
Level of significance:
∝ = 5% = 0.05
Degree of freedom:
df = n-1
= 50 -1 = 49
Critical value :
± 1.96
a) T test
test t is used as average X mean is used
Test Statistic:
t = X₂ - X₁ / Sd /√n
= 78 - 75 / 7/√50
=3.0304
Critical region :
We take two tail T test
test statistic is in reject interval. Reject H₀
b) Claim
because critical value is not equal to test statistic then reject null hypothesis
Answer:
I think the distance is 7
Ava paid $73.20 in sales tax.
Step-by-step explanation:
Given,
Shipping charges = $7.99
Per ounce charges = $30.50
Charges of 40 ounce = 40*Per ounce charges
Charges of 40 ounce = 40*30.50 = $1220
Sales tax = 6%
Amount of sales tax = 6% of charges of 40 ounce
Amount of sales tax = 
Amount of sales tax = 
Ava paid $73.20 in sales tax.
Keywords: sales tax, multiplication
Learn more about multiplication at:
#LearnwithBrainly
Answer:
780
Step-by-step explanation:
So 5% is 39 so 5% x 20 is 100% do the same with the 39 so do
39 x 20 = 780
B*8=A so 30% of B is 24. 30/100=24/b,b=80.
12.5% of A =8.12.5/10=8/A ,A=64
80 is larger than 64 B is larger than A.
