Answer:
Since the calculated z=40 falls in the critical region this indicates that the true obesity rate for children in Marion County is different from the national average at the 0.05 significance level. We reject the null hypothesis that population proportion is 0.17.
Step-by-step explanation:
The national average is 17% .The z proportional hypothesis test is used.
1) Let the null and alternate hypothesis be
H0: p =0.17
against the claim
Ha: p ≠ 0.17
Choose the significance level ∝= 0.05
The critical region is z > 1.96 and Z <- 1.96 because it is two tailed test.
Computing
z= p^-p / sqrt [pq/n]
Z= 0.22-0.17/ √0.17*(1- 0.17)/90147
z= 39.965
Since the calculated z=40 falls in the critical region this indicates that the true obesity rate for children in Marion County is different from the national average at the 0.05 significance level. We reject the null hypothesis that population proportion is 0.17.
Lets break this down here.
First- 198 rounded would be 200
Then- we add 727 which would be 927
if you were to round that it would be 930
Answer:
15 hours
Step-by-step explanation:
1vat/6hours - 1vat/10hours = 1vat/xhours
1/6 - 1/10 = 1/x
Use common denominator of 30
5/30 - 3/30 = 1/x
2/30 = 1/x
1/15 = 1/x
Cross multiply
x = 15 hours
<span> correlation is the answer</span>
The fractions of pizza Lila sprinkled with grated cheese is 1 / 3 .
<h3 /><h3>How to solve fractions?</h3>
She ordered an extra large pizza from pizza palace .
The pizza was cut into 12 equal pieces.
She sprinkled grated cheese on 4 pieces and red pepper flakes on 3 other pieces.
Therefore, the fraction of pizza she sprinkled with grated cheese is as follows;
fractions sprinkled with grated cheese = amount of pizza sprinkled with grated cheese / total number of pizza pieces.
fractions sprinkled with grated cheese = 4 / 12
fractions sprinkled with grated cheese = 1 / 3
learn more on fractions here:
brainly.com/question/21289530
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