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steposvetlana [31]
3 years ago
6

Please tell me how o do this

Mathematics
1 answer:
larisa86 [58]3 years ago
5 0

Answer:

you might have to use an app that scans that specific problem :)

Step-by-step explanation:

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A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two yea
Lelu [443]

Answer: aA 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years = (0.163,0.189)

Step-by-step explanation:

Let p = population proportion of adults in the U.S. who have donated blood in the past two years.

Given: A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two years.

Sample size: n= 2322

Sample proportion q=\dfrac{408}{2322}=0.176

Critical z-value for 90% confidence level : z*=1.645

The confidence interval for population proportion:

q\pm z^*(\sqrt{\dfrac{q(1-q)}{n}})

A 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years:

0.176\pm (1.645)(\sqrt{\dfrac{0.176(1-0.176)}{2322}})\\\\=0.176\pm (1.645)(0.0079)\\\\=(0.176\pm0.013)\\\\=(0.176-0.013,0.176+0.013))\\\\=(0.163,0.189)

Hence,

6 0
3 years ago
Evaluate the expression for the given value of the variable(s). Show your work.
ch4aika [34]
I got -50 as my answer
4 0
3 years ago
Jenna found a pair of sneaker that cost $64.She has a 15% off coupon. How much will she pay for the sneakers?(without Tax?)
S_A_V [24]
First, do 100-14 to find out how much percent doesn't get the coupon= 85
then find 85% of 64= 54.4
finally, your answer is: 54.4
3 0
3 years ago
Challenge You buy 3.18 pounds of apples, 1.25 pounds of peaches, and 1.76 pounds of pears.
loris [4]

Answer:

6.19

Step-by-step explanation:

I hope this helps you

6 0
2 years ago
Type the correct answer in each box
levacccp [35]

Answer:

76589607+789607p8=2

Step-by-step explanation:

3872oed0w89p23-98937ey9tg=2

4 0
2 years ago
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