Answer:
Null hypothesis:
Alternative hypothesis:
And the best answer for this case is:
C. p-value
Step-by-step explanation:
Data given and notation
n represent the random sample taken
estimated proportion of interest
is the value that we want to test
represent the significance level
z would represent the statistic (variable of interest)
represent the p value (variable of interest)
Concepts and formulas to use
We need to conduct a hypothesis in order to test the claim that the true proportion i 0.72 or no.:
Null hypothesis:
Alternative hypothesis:
When we conduct a proportion test we need to use the z statistic, and the is given by:
(1)
The One-Sample Proportion Test is used to assess whether a population proportion is significantly different from a hypothesized value 
.
For this case the only probability that can be calculated from the statistic calculated is the p value given by:
And the best answer for this case is:
C. p-value
Answer:
10
Step-by-step explanation:
Two negatives equal a positive.
Answer:
The discounted price of the t-shirt is $16.10.
Step-by-step explanation:
First find the percentage of the discount.
$130.00 (original price of jeans) - $91.00 (discounted price of jeans) = 39
Divide the difference in prices by the original price
39/130 = 0.3
Multiply by 100 for the percentage: 0.3 x 100 = 30%
Calculate 30% discount on the t-shirt price of $23.00
23 x .3 = 6.9
Subtract discount from original price of t-shirt
$23.00 - $6.90 = $16.10
11.05 inches.
EXPLANATION:
Firstly, lets see the unit rate for how many inches per minute.
5.2 divided by 8 is 0.65 inches every minute.
Now since there is 17 mins, simply do 0.65 inches per min x 17 mins.
11.05 inches.
Hope this helps!
50% because the first two children have no effect on the third one
