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vova2212 [387]
3 years ago
7

Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled​ t-test and

the nonpooled​ t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x overbar 1equals11​, s 1equals3​, n 1equals25​, x overbar 2equals10​, s 2equals8​, n 2equals20 a.​ Right-tailed test, alphaequals0.05 b. 90​% confidence interval a. What are the hypotheses for the​ t-test? A. H0​: mu1equalsmu2 Ha​: mu1not equalsmu2 B. H0​: mu1equalsmu2 Ha​: mu1greater thanmu2 Your answer is correct.C. H0​: mu1equalsmu2 Ha​: mu1less thanmu2 D. H0​: mu1greater than or equalsmu2 Ha​: mu1less thanmu2 Find the test statistic. tequals . 530 ​(Round to three decimal places as​ needed.) Find the​ P-value. Pequals . 3006 ​(Round to four decimal places as​ needed.) What is the conclusion of the hypothesis​ test? A. Reject H0. There is insufficient evidence that mu1 is greater than mu2. B. Do not reject H0. There is sufficient evidence that mu1 is greater than mu2. Your answer is not correct.C. Do not reject H0. There is insufficient evidence that mu1 is greater than mu2. This is the correct answer.D. Reject H0. There is sufficient evidence that mu1 is greater than mu2. b. The 90​% confidence interval is from nothing to nothing. ​(Round to three decimal places as​ needed.)
Mathematics
1 answer:
Vesna [10]3 years ago
5 0

Answer:

okay not clear,

upload for me a word document and i will do this for  you at my g mail which is [email protected] for clarity and accuracy please

Download docx
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The runner has run 5.6 miles which is 35% of today's course How long is today's course? Show another correct answer other than 5
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Answer:

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I know this is super easy! My brain just cannot wrap my head around my maths today. Please help soon.
zysi [14]

Hello there! the answers to your question are:

a. $15x + $20y = $100; x + y = 6.

b. Yes, he can, since the cost of 4 shirts is $60, and two pants is $40, which adds up to be how much he is spending, or $100.  

Let's start by working to solve part a. We need to set up a system of equations that models the situation given. To do this, let's set up an equation that models how many Sean will buy in total and how much he will spend.

The question says that he wants to spend $100 total, and shirts cost $15 and pants cost $20. We can model this as $15x + $20y = $100.

The question also says he wants to purchase a total of 6 items for his wardrobe, so the number of items he buys has to add up to 6. This can be modeled as x + y = 6.

This gives us our answer for part a. Now let's solve part b. We are being asked if Sean can buy 2 pants and 4 shirts. This fits one of our equations, x + y = 6, since 4 and 2 add up to be 6. We need to see if this fits our other equation, though $15x + $20y = $100. To do this, we can substitute the number of shirts (4) into the x value, and the number of pants (2) into the y value and solve. If the total is more than 100, he can't. If it is less, he can.

$15(4) + $20(2) = 100

60 + $20(2) = 100

60 + 40 = 100

Since our total adds up to $100, he can buy 2 pairs of pants and 4 shirts.

I hope this helps and have a great rest of your day!

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