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2 years ago

13

Complete the explanation on why it is a good idea to use multiple samples when making comparative inferences about two populatio

ns.
It is a good idea to use multiple random samples to see how statistical measure vary among the ————-(different/same) samples.

1 answer:

ipn [44]2 years ago

7 0

272 differ samples that’s the answer

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PLEASE HELP ME I ONLY HAVE 20 MINUTES!!!!

Over [174]

$h(x) = 40x - 16x^2\\h(x) = 15\\40x - 16x^2 = 15\\-16x^2 + 40x - 15 = 0\\$

Using the quadratic formula we get

$x_1 = 0.5\\x_2 = 2.04$

Therefore the tennis ball is at least 15 feet above the ground from 0.5 seconds to 2.04 seconds

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3 years ago

Thomas wrote the equation y equals 3x + 3/4 when Sandra her equation they discovered that her equation had all the same Solution

Mice21 [21]

Were options given to you?

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3 years ago

Let f(x)=7x and g(x)=7x+2−4. Which transformations are needed to transform the graph of f(x) to the graph of g(x)? Select each c

nignag [31]

Answer:

There is a vertical translation happening here:

- Up 2 units

- Down 4 units

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2 years ago

The dataset Restaurant Tips contains data recorded from 157 restaurant bills at a bistro in New York over a two week period and

xz_007 [3.2K]

Answer: ($3.532, $4.166)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.90=0.10$

Critical value : $z_{\alpha/2}=1.645$

Sample size : n= 157

Sample mean : $\overline{x}=\$\ 3.849$

Standard deviation : $\sigma= \$\ 2.421$

The confidence interval for population mean is given by :_

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

$\text{i.e. }\$\ 3.849\pm (1.64)\dfrac{2.421}{\sqrt{157}}\\\\\approx\$\ 3.849\pm0.317\\\\=(\$\ 3.849-0.317,\$\ 3.849+0.317)=(\$\ 3.532,\$\ 4.166)$

Hence, the 0% confidence interval for the average tip given at this restaurant = ($3.532, $4.166)

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2 years ago

A studemt is hiring a 3-kilometer race. he runs 1 kilometer every 2 minutes. select the function that describes his distance fro

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The answer which we found by inspection is
B. f(x) = -1/2x + 3

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3 years ago