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FinnZ [79.3K]
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.
Mathematics
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!!!!
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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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Thomas wrote the equation y equals 3x + 3/4 when Sandra her equation they discovered that her equation had all the same Solution
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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
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Answer:

There is a vertical translation happening here:

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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
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