From the question, we know the population standard deviation, σ = 1.63, the sample standard deviation, s = 3.07, the sample mean, $\bar{x}=7.43$ and the sample size, n = 38.

The question illustrates a hypothesis chi-square test of variance.

The test statistics for a Chi-squared test of variance is given by
$T=(n-1)\left( \frac{s}{\sigma} \right)^2 \\ \\ =(38-1)\left( \frac{3.07}{1.63} \right)^2 \\ \\ =37(1.883)^2=37(3.5473) \\ \\ =131.25$

7 0

3 years ago

In order to develop a more appealing cheeseburger, a franchise uses taste tests with 1515 different buns, 66 different cheese

polet [3.4K]

To find the number of possible cheeseburgers, multiply 1515 x 66 x 33 x 55 = 181481850. Multiply by 10 to find the time, 1814818500. Divide by 60 to find the hours, 30246975. You can divide by 24 to find the days, then 7 for weeks, and so on.

6 0

4 years ago

What is the surface area of this figure?

Mkey [24]

Answer:

100

Step-by-step explanation:

hope this helped

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brainliest is appreciated only 1more to level up please help :)))

8 0

3 years ago

7. Emma has $25 to spend. She wants to buy a

Natasha_Volkova [10]

Answer:

Emma can buy 21 bookmarks

Step-by-step explanation:

Add 14.50 + 0.50 + 0.50 + 0.50 + 0.50 + 0.50 you get it. Until she hits 25.00 dollars.

8 0

2 years ago