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Margarita [4]
2 years ago
11

Rounded to the nearest hundredth: 73 74 74 75 76 77 77 78 78 78 79 80 80 80 81 81 81 81 82 82 82 82 83 83 84 86 86 87 88

Mathematics
1 answer:
inn [45]2 years ago
7 0
Answer is 100 as the next would be 200
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Using the simple random sample of weights of women from a data​ set, we obtain these sample​ statistics: nequals45 and x overbar
Tomtit [17]

Answer: (141.1, 156.48)

Step-by-step explanation:

Given sample statistics : n=45

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\sigma=31.37\text{ lb}

a) We know that the best point estimate of the population mean is the sample mean.

Therefore, the best point estimate of the mean weight of all women = \mu=148.79\text{ lb}

b) The confidence interval for the population mean is given by :-

\mu\ \pm E, where E is the margin of error.

Formula for Margin of error :-

z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}

Given : Significance level : \alpha=1-0.90=0.1

Critical value : z_{\alpha/2}=z_{0.05}=\pm1.645

Margin of error : E=1.645\times\dfrac{31.37}{\sqrt{45}}\approx 7.69

Now, the 90% confidence interval for the population mean will be :-

148.79\ \pm\ 7.69 =(148.79-7.69\ ,\ 148.79+7.69)=(141.1,\ 156.48)

Hence, the 90​% confidence interval estimate of the mean weight of all women= (141.1, 156.48)

3 0
3 years ago
write an equation of the line with the following information. Through (4,1) and perpendicular to y=1/3x +3
Yakvenalex [24]
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you can stop right here or you can write it into slope intercept form:
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5 0
3 years ago
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS PLEASE
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4 0
2 years ago
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DaniilM [7]
34 - 6 = 28
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After making the 6 whole sheet of paper cards for her closest friends Aimi will have 28 pieces of paper left.

Since she wants to use 1/8 of a sheet per valentine (think of it as one piece of paper can make 8 valentines) you can do 28 pieces of paper multiplied by 8 which gives you 224 valentines. 
8 0
3 years ago
Which would be a good statistical question Alexandra could have used to create the tally chart?
Roman55 [17]

Answer: D

Step-by-step explanation:

Sorry I’m late.

Remember:

A STATISTICAL QUESTION has variable answers.

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4 0
2 years ago
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