Using the z-distribution, we have that:
- The mean hip measurement for the random sample of 15 pairs of women's size 16 jeans is of 44.1 inches.
- The <u>margin of error</u> is of 0.8 in.
- The interpretation is: Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.
The first step to solve this question, before building the confidence interval, is finding the sample mean, which is the <u>sum of all observations divided by the number of observations</u>. Hence:
The margin of error of a z-confidence interval is given by:
In which:
- z is the critical value.
is the population standard deviation.
- n is the sample size.
We have to find the critical value, which is z with a p-value of 
, in which 
is the confidence level.
In this problem, 
, thus, z with a p-value of 
, which means that it is z = 2.575.
Then, the margin of error is:
The <u>margin of error</u> is of 0.8 in.
The interval is:
The interpretation is:
Mallorie is 99% sure that the mean hip measurement of size 16 jeans is between 43.3 in and 44.9 in.
A similar problem is given at brainly.com/question/25300297
Answer:
C. f(2) = 0, and g(-2) = 0
Step-by-step Explanation:
From the graph given, the line for f(x) and g(x) intercept each other at x = 0, when y = 4, that is f(0) = 4 and also g(0) = 4.
From the graph, on the line of g(x), when x = -2, y = 0, that is g(-2) = 0.
Also for f(x), when x = 2, y = 0. That is, f(2) = 0.
Therefore, the statement that is true about the graphed function is:
f(2) = 0, and g(-2) = 0
Hopes this helps:
Answer: x = -10/7
1. Simplify 2 • 2 to 4
4 + 7x + 6 = 0
2. Simplify 4 + 7x + 6 to 7x + 10.
7x + 10 = 0
3. Subtract 10 from both sides.
7x = -10
4. Divide both sides by 7.
X = -10/7
Answer:
Given:
- Sale prices at the Ajax Outlet Store are 50% below the original prices.
- On Saturdays, an additional discount of 20% off the sale price is given.
To find:
- The Saturday price of a coat whose original price is $180.
The formula used to calculate the percentage is (value/total value)*100%.
Step-by-step explanation:
Step 1 of 2
The original price of coat = $180
Ajax always sells at 50% discount
So their sale price = $90
Step 2 of 2
On Saturdays they sell 20% less
Which implies-
1/5*90 = 18
90-18=72
They sell at $72 on Saturday.
