I don't know how to do this at all

Mathematics

1 answer:

posledela4 years ago

8 0

Try using photomath its an app where u take a pic of the problem and I solves it for you and shows u the working

You might be interested in

In previous tests, baseballs were dropped 24 feet onto a concrete surface, and they bounced an average of 92.82 inches. In a t

goblinko [34]

Answer:

There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are different

Step-by-step explanation:

Given that in previous tests, baseballs were dropped 24 feet onto a concrete surface, and they bounced an average of 92.82 inches

But new balls showed mean of 92.6 inches with s = 1.72 inches

Sample size = 23

Since sample size is less than 30 and population std deviation is not know we use t test

$H_0: \bar x = 92.82\\H_a: \bar x \neq 92.82$

(Two tailed test at 5% significance level)

Mean difference = $92.6-92.82=-1.22$

Std error of sample mean = s/sqrt n = $\frac{1.72}{\sqrt{23} } \\=0.3586$

Test statistic t = mean diff/std error = -3.402

df = 23-1 =22

p value = 0.002559

since p value <5% we reject H0

There is sufficient evidence to support the claim that the new balls have bounce heights with a mean different from 92.8292.82 inches, and it appears that the new baseballs are different

3 0

3 years ago

Please help me with this problem

Sav [38]

Go check out photo math that's your answer get it in the app store

6 0

3 years ago

If I pay $10.50 for 3 lbs. of peanuts, what is the unit rate?

Nadusha1986 [10]

Answer:

the answer is 3.5 tell me if you got it right

6 0