Q4, PLSS HELP, IT TIME.........

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Answer 1

Answer:

Answer:

dilation:) dilation always produces a congruent figure...

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How many pairs of skis in stock does the shop have to have to make the probability in question 4 less than .01? Round your answer to a whole numbermean=150
Standard Deviation=20

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Answer:

159 hwqb Step-by-step explanation:2n3wq,brudj32nwqrdb3wndj32wsd

2Select the correct answer.
Which value is needed to determine a confidence interval for a sample mean?
OA
the margin of error for the proportion
ов.
the population size
OC.
the sample proportion
OD
the standard error of the mean

Answers

The value needed to determine a confidence interval for a sample mean is the standard error of the mean option (D) is correct.

What is a confidence interval for population standard deviation?

It is defined as the sampling distribution following an approximately normal distribution for known standard deviation.

The formula for finding the confidence interval for population standard deviation as follows:

$\rm s\sqrt{(n-1)/(\chi^2_(\alpha/2, \ n-1))} < \sigma < s\sqrt{(n-1)/(\chi^2_(1-\alpha/2, \ n-1))}$

Where s is the standard deviation.

n is the sample size.

$\chi^2_(\alpha/2, \ n-1) and \chi^2_(1-\alpha/2, \ n-1)$ are the constant based on the Chi-Square distribution table:

α is the significance level.

σ is the confidence interval for population standard deviation.

Calculating the confidence interval for population standard deviation:

We know significance level = 1 - confidence level

It is given that:

The value needed to determine a confidence interval for a sample mean is the standard error of the mean.

CI = X + Z(s/√n)

Here CI is the confidence interval

Z is the confidence level

X is the sample mean

Thus, the value needed to determine a confidence interval for a sample mean is the standard error of the mean option (D) is correct.

Learn more about the confidence interval here:

brainly.com/question/6654139

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Answer:

D.thestandarderrorofthemean

Step-by-step explanation:

trust me i got it right Plato

How many different patrols of 6 girls can be selected from a troop of 24 Girl Scouts?

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Answer:

Step-by-step explanation:

The drama club spent $8.50 per person on food for a cast party. The total cost of the flood was $229.50. How many people were at the cast party?

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Answer:

229.50 ÷ 8.50= 27 people

Please help me with this

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Answer:

9x^2 + 12x

Step-by-step explanation:

The area of the blue

3* 3x^2 = 9x^2

The area of the pink is

3* 4x = 12x

Add them together

9x^2 + 12x

What is the co efficient of 'y' in the expression 4x-3y ?

Answers

Answer:

coffecient of y is -3

hope it helps you

Step-by-step explanation:

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At the new light bulb plant, 9 out of 25 light bulbs produced are defective. If the daily production is 4400 light bulbs, how many are defective?

An experimenter is studying the effects of temperture, pressure, and type of catalyst on yield from a certain chemical reaction. Three different temperatures, four different pressures, and five different catalysts are under consideration.(a) If any particular experiental run involves the use of single temperature, pressure, and catalyst, how many experimental runs are possible?(b) How many experimental runs are there that involve use of the lowest temperature and two lowest pressure?