2 years ago

Please help me with this question (:

Mathematics

1 answer:

vodomira [7]2 years ago

8 0

Answer:

Empty box number 1: 6.

Empty box number 2: 75.

Drop down box selection: Correct.

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m=15.45?

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A random sample of 12 students used Method A, and their increase in points averaged 46.31, with a sample standard deviation of 6

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Answer:

The null hypothesis is $H_o : \mu_A - \mu_B = 0$

The alternative hypothesis is $H_a : \mu_A - \mu_B > 3$

Step-by-step explanation:

From the question we are told that

The mean of method A is $\mu_A = 46.31$

The standard deviation of method A is $\sigma = 6.44$

The mean of method B is $\mu_B = 42.79$

The standard deviation of method B is $\sigma_B = 7.52$

An appropriate set of null and alternative hypothesis to determine whether Method A increases students points by more than 3 points is

The null hypothesis is $H_o : \mu_A - \mu_B = 0$

The alternative hypothesis is $H_a : \mu_A - \mu_B > 3$

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3 years ago

Express 0.456 as a percent

nordsb [41]

<span>Express 0.456 as a percent
=
45.6%

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There Is no problem.

Step-by-step explanation:

I would love to help you once you add a question. Have a blessed day!

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