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3 years ago

The Centers for Disease Control and Prevention (CDC) defines a healthy sleep duration

1 answer:

6 0

a. The point estimate of the married people that sleep well is = 0.6299. The confidence interval for the mean hours of sleep for those that have never been married but report good sleep is 0.6186, 0.6412

b. The point estimate of the number of hours for people that have never been married = 7.2257

95% confidence interval for the mean number of hours of sleep for those who have never been married = 7.2065, 7.2447

c. the estimated number of sleep for those that have never been married = 7.729 hours

a. The point estimate

$P=\frac{Xp}{n}$

$Xp = successes\\n = sample size\\$

Those who have never been married n = 7044

Xp = those who sleep for 7 hours at least

To get Xp, the excel function

Countif(range, criteria)

Countif(A:A, >=7)

This gives Xp = 4437

Point estimate =

$\frac{4477}{7044}$

= 0.6299

The point estimate of the married people that sleep well is = 0.6299

At 95% interval of confidence,

α = 1-0.95 = 0.05

α/2 = 0.05/2 = 0.025

Z0.025 = 1.96 ( Use the standard probability normal table)

Margin of Error

= $M.E = 1.96\sqrt \frac{0.6299(1-0.6299)}{7044} \\\\= 1.96\sqrt{0.000033} \\\\1.96*0.0057$

= 0.0113

The 95% confidence interval

= 0.6299 - 0.0113 , 0.6299 + 0.0113

= 0.6186, 0.6412

The confidence interval for the mean hours of sleep for those that have never been married is 0.6186, 0.6412

b. Sample mean

x = ∑x/n

x = number of sleep of the never been married

Mean is calculated using excel function

Average(range)

Average(a:a)

This gives the sample mean = 7.2257

The point estimate of the number of hours for people that have never been married = 7.2257

Standard deviation using excel =

Stdev(A:A) = 0.8211

$Margin of error =1.96*\frac{0.8211}{\sqrt{7044} }$

= 0.0192

The confidence interval =

= 7.2257-0.0192, 7.2257+0.0192

= 7.2065, 7.2447

95% confidence interval for the mean number of hours of sleep for those who have never been married = 7.2065, 7.2447

c. From the available data, the mean number of sleep per day that is gotten from the 4437 people that are unmarried and sleep healthily for at least 7 hours = 34295.1

Mean = 34295.1/4437

= 7.729

the estimated number of sleep for those that have never been married = 7.729 hours

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3 years ago

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Answer:

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3 years ago

Every person I have ever met says their favorite pizza is pepperoni pizza. Therefore, I can assume that everyone I ever meet wil

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Answer:

Inductive reasoning

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In this case, the person met many of them who says that their favorite pizza is pepperoni and then every time that someone say that they love pizza, this person will think of pepperoni pizza because of the previous experiences that caused those observations.

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3 years ago

MC Qu. 97 The standard materials cost to produce... The standard materials cost to produce 1 unit of Product R is 7 pounds of ma

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Answer:

total direct materials cost variance is $6,000 Favourable

Explanation:

first we get here Standard cost to manufacture

Standard cost to manufacture 6,000 units is = 7 × $47 × 6,000

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and

now we get here Actual cost to manufacturing

Actual cost to manufacturing 6,000 units is = 41,000 × $48

Actual cost = $1,968,000

and

now we get here Direct material cost variance that is express as

Direct material cost variance = Standard cost - Actual cost ..........1

put here value

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Direct material cost variance = $6,000 Favourable

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3 years ago

On January 2, 2021, Miller Properties paid $28 million for 1 million shares of Marlon Company's 6 million outstanding common sha

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Answer:

A. Income statement $8.4 million

B. Balance sheet million $35.4 million

C. Operating cash flow million $1 million

Investing cash flow million=$28 million

Explanation:

a. Calculation for Income statement million

Using this formula

Income statement=Investment revenue -Patent amortization adjustment

Let plug in the formula

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Therefore Income statement million will be $8.4 million

b. Preparation of the Balance sheet million

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Add Investment revenue $9.0 million

($54 million × 1/6)

Less Dividend ($1 million)

($6 million × 1/6)

Less Patent amortization adjustment ($0.6 million)

([$36 million] × 1/6]÷10 years)

Balance sheet million $35.4 million

($28 million+$9.0 million-$1 million-$0.6 million)

Therefore Balance sheet million will be $35.4 million

c. Preparation of the Statement of cash flows

Operating cash flow million=($6 million × 1/6)

Operating cash flow million= $1 million

Investing cash flow million=$28 million

Therefore Operating cash flow million will be $1 million while the Investing cash flow million will be $28 million.

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