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umka2103 [35]
3 years ago
8

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)

3 0
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
pogonyaev

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

Times 450 by 1.18 = 531

6 0
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

7 0
2 years ago
Mary said, "Four times my age reduced by thirty is six. How old am I?
skelet666 [1.2K]

Answer:

9

Step-by-step explanation:

I said so

6 0
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
Reika [66]

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$

3 0
3 years ago
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