1. Cedric enters into a contract with Claudia to buy her house for $150,000. Claudia decides later not to sell

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

laiz [17]

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 <u>excel function </u>

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

<u>Standard deviation</u> using excel =

Stdev(A:A) = 0.8211

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

= 0.0192

The<u> confidence interval</u> =

= 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

6 0

3 years ago

Changes in governments or ruling political parties can affect businesses. The main concern of a multinational corporation is

nadya68 [22]

Answer:

D. which government is in power.

Explanation:

In a democratic system of ruling when one party come into power after getting majority votes the main concern of the corporation unit is to know which government is in power or which political party has a chance to gain majority votes.

Every government that takes oath for next five year or defined year has its own policy on economic or for business. This predefined rules and policy may be differ from exciting government or may be followed the path of previous government. therefore corporation unit are always in a mood to go with coordination with new government to have maximum advantage

4 0

3 years ago

margo has found her dream house. it’s listed at $370,000, and she plans to offer $365,000. she has a letter from her lender stat

charle [14.2K]

By providing the letter with her maximum loan amount Margot risks reducing her negotiating ability

This is further explained below.

<h3>What is a pre-approval letter?</h3>

Generally, A letter from a lender that states that the lender is willing to lend to you in the event of prequalification or preapproval is a document that states the lender is willing to lend to you up to a particular loan amount.

This is not a guaranteed loan offer, and the document that you are looking at is based on certain assumptions.

In conclusion, Margot runs the risk of decreasing her capacity to negotiate by diminishing her leverage by submitting the letter with the maximum loan amount.

Read more about the pre-approval letter

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7 0

1 year ago

We use statistics when making decisions, rather than parameters, because ________________.

natka813 [3]

Statistics are used in place of parameters for making decisions since they are simpler to collect.

<h3>What are the guidelines?</h3>

In general, a parameter is any feature that aids in describing or categorizing a certain system. In other words, a parameter is a component of a system that is crucial or useful for identifying the system or assessing its functionality, status, or other characteristics.

To describe the entire population under study, a parameter is utilized. For instance, we are interested in learning the typical length of a butterfly. This information about the total butterfly population makes it a parameter.

Three different parameter kinds,

Value Specifiers.
Parameters of Reference.
output variables

To learn more about parameters, refer to:

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4 0

1 year ago

You purchased a share of stock for $53. One year later you received $3.00 as dividend and sold the share for $52. Your holding-p

GalinKa [24]

Answer:

the holding period return is 3.77%

Explanation:

The computation of the holding period return is shown below:

Holding period return is

= (Income + (Selling price - Purchase price)) ÷ Purchase price

= ($3 + ($52 - $53)) ÷ 53

= 3.77%

Hence, the holding period return is 3.77%

We simply applied the above formula so that the correct value could come

And, the same is to be considered

3 0

2 years ago