Answer:
Step-by-step explanation:
Next term of the given AP can be obtained by adding common difference (d) in the last term

Using the z-distribution, it is found that the 90% confidence interval for mean calories in a 30-gram serving of all chocolate chip cookies is (143, 149).
We are given the <em>standard deviation</em> for the population, which is why the <em>z-distribution </em>is used to solve this question.
The information given is:
- Sample mean of
.
- Population standard deviation of
.
- Sample size of
.
The confidence interval is:
The critical value, using a z-distribution calculator, for a <u>95% confidence interval</u> is z = 1.645, hence:


The 90% confidence interval for mean calories in a 30-gram serving of all chocolate chip cookies is (143, 149).
A similar problem is given at brainly.com/question/16807970
Answer:
Choice C correct answer.
Step-by-step explanation:
From the question statement, we observe that
d=6 in
r=d/2
so, r=6/2=3 in
The formula to find area is
A = πr²
Putting the value of radius, we get
A = π(3)²
A= 9π in²
Answer:
Step-by-step explanation:
plane travels at a rate of 14,200 miles every 2 hours.
In other to find how many miles per hour
=> 14,200÷2
=> 7,100
=> multiply 7,100 by 4.5
=> 31,950 miles