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3 years ago

Select the graph of the solution. Click until the correct graph appears. pls help x < 4

Mathematics

1 answer:

Ray Of Light [21]3 years ago

3 0

Answer:

The correct one is the one on the left.

(the arrow pointing to the left)

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5. Kal Tire installs automobile tires on a first-come first-served basis. A random sample of 50 customers experienced an average

Rainbow [258]

5.7099 is the margin of error.

<h3>What is standard deviation ?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean.

Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.

According to the question,

The standard sampling error of the sample mean is σₓ ,

The sampling distribution is: N (u,σₓ/n)

Therefore,

By using the standard deviation formula:

σₓ = √∑(xi -μ)/N

Where,

∑= population standard deviation

N= the size of the population

xi= each value from the population

μ =the population mean

So ,

σₓ = $\frac{20.6}{\sqrt{50} }$ = 2.913

Since, a = 1- 95% = 0.05

therefore $Z\frac{a}{2}$ = (1-0.005 x 2) = 1.959964

Here, the margin of error for a 95% confidence interval for this sample is given by:

$Z\frac{a}{2}$ * σₓ = 1.959964 x 2.913

= 5.7099

5.7099 is the margin of error for a 95% confidence interval for this sample.

Learn more about standard deviation here:

brainly.com/question/13905583

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7 0

2 years ago

Matilda and Lorraine work in the mail room of a large company sorting letters. Matilda has already sorted 50 letters and continu

labwork [276]

1) Number of letters Matilda has sorted after x hours: m(x)Matilda has already sorted 50 letters and continues sorting at a rate of 50 letters per hour:m(x)=50+50xwhere:Number of hours: x
Number of letters Lorraine has sorted after x hours: l(x)Lorraine has already sorted 80 letters and continues sorting at a rate of 40 letters per hour:l(x)=80+40xwhere:Number of hours: x
Which function can Matilda and Lorraine use to determine the total number of letters they have sorted after x hours?Total number of letters they have sorted after x hours: f(x)
f(x)=m(x)+l(x)f(x)=(50+50x)+(80+40x)f(x)=50+50x+80+40xf(x)=90x+130
Answer: The function Matilda and Lorraine can use to determine the total number of letters they have sorted after x hours is f(x)=90x+130
2) How many letters will they have sorted after 6 hours?
x=6→f(6)=?f(6)=90(6)+130f(6)=540+130f(6)=670
Answer: They will have sorted 670 letters after 6 hours
Answer: First option: The function that describes the total number of letters sorted by Matilda and Lorraine in x hours is given by f(x) = 90x + 130. Thus, they will have sorted 670 letters in 6 hours.

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3 years ago

Which of the following graphs is a function

Pie

Answer:

Step-by-step explanation:

Hope this helps:)

7 0

3 years ago

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The subtraction property of equality tells you that you can subtract the same value from ______ side of an equation to create an

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