3 years ago

X y

Mathematics

1 answer:

Yuki888 [10]3 years ago

6 0

Letter B

2(2)-2= 2
3(2)-2= 4
4(2)-2=6
5(2)-2=8

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Suppose a researcher is interested in understanding the variation in the price of store brand milk. A random sample of 36 grocer

liberstina [14]

Answer: ($3.055, $3.205)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.95=0.5$

Critical value : $z_{\alpha/2}=1.96$

Sample size : n= 36

Sample mean : $\overline{x}=\$\ 3.13$

Standard deviation : $\sigma= \$\ 0.23$

The confidence interval for population mean is given by :_

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$\text{i.e. }\$\ 3.13\pm (1.96)\dfrac{0.23}{\sqrt{36}}\\\\\approx\$\ 3.13\pm0.075\\\\=(\$\ 3.13-0.075,\$\ 3.13+0.075)=(\$\ 3.055,\$\ 3.205)$

Hence, the 95% confidence interval to estimate the population mean = ($3.055, $3.205)

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3 years ago

A manufacturing company with 450 employees begins a new product line and must increase their numbers of employees by 18%. How ma

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You are adding 18%, which makes it 118% of original employees

Times 450 by 1.18 = 531

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2 years ago

The height, h in feet, of a tennis ball that a player hit upward can be modeled by the equation h = 80t – 16t² , where t is time

ANTONII [103]

Here's link $^{}$ to the answer:

bit. $^{}$ ly/3gVQKw3

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2 years ago

Mary said, "Four times my age reduced by thirty is six. How old am I?

skelet666 [1.2K]

Answer:

Step-by-step explanation:

I said so

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2 years ago

Your family Used two full tanks of gasoline on a road trip. Your car drives about 25 miles per gallon on a road trip. Your car d

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Answer:

1 : 24

2: 600

3: 112.5

4: no i need 63 $

Step-by-step explanation:

1: 12*2=24

2: 24*25=600

3: 24*4.5=112.5

4:350 miles = 14 galoon=14*4.5=63$

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3 years ago