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Damm [24]
2 years ago
14

Suppose that 10 express customers are selected without replacement. How many samples contain exactly one customer with more than

one order last month
Mathematics
1 answer:
nadezda [96]2 years ago
6 0

Answer:

hshdhdhddhdhdhdgdgshshhehshshshsehdhhdhehdhdhdhdhshshhdhshsjdkkdkellffkxjdjjd

Step-by-step explanation:

jxjdjdsklalwlskdj"nxnhhxhdhdhdbdbdxnnznsndnxjdjdjddjjdjdkdjdjdjdjdhdjdjrjjllpwpeotitijcnMnBxbcndjaksdkjjfdbcbcbcbbxbxbdbndjdkdjdjdjdjdjej

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notebooks cost 1.20 dollars each.This weekend they will be on sale for 0.80 dollars.What percentage is the sale
Fiesta28 [93]
1.20 divided by 0.80

4 0
3 years ago
Read 2 more answers
100 points if u help
malfutka [58]

The answer is 87.12

Just check it once

6 0
3 years ago
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Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the hospital. Do patients at ru
valina [46]
  1. For this study, we should use t-test and the null and alternative hypotheses would be given by H₀: μ = 7 and H₁: μ < 7.
  2. The test statistic is -1.941 and the p-value (0.0381) is <u>greater than</u> α = 0.01.
  3. Based on this, we should <u>fail to reject</u> the null hypothesis.
  4. Thus, the final conclusion is that the data suggest the population mean is not significantly lower than 7 at α = 0.01, so there is statistically insignificant evidence to conclude that the population mean waiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is equal to 7 hours.

<h3>What is a null hypothesis?</h3>

A null hypothesis (H₀) can be defined the opposite of an alternate hypothesis (H₁) and it asserts that two (2) possibilities are the same.

<h3>How to calculate value of the test statistic?</h3>

The test statistics can be calculated by using this formula:

t=\frac{x\;-\;u}{\frac{\delta}{\sqrt{n} } }

<u>Where:</u>

  • x is the sample mean.
  • u is the mean.
  • is the standard deviation.
  • n is the number of hours.

For this study, we should use t-test and the null and alternative hypotheses would be given by:

H₀: μ = 7

H₁: μ < 7

t=\frac{6.3\;-\;7}{\frac{1.3}{\sqrt{13} } }\\\\t=\frac{-0.7}{\frac{1.3}{3.6056 } }

t = -0.7/0.3606

t = -1.941.

For the p-value, we have:

P-value = P(t < -1.9412)

P-value = 0.0381.

Therefore, the p-value (0.0381) is <u>greater than</u> α = 0.01. Based on this, we should <u>fail to reject</u> the null hypothesis.

Thus, the final conclusion is that the data suggest the population mean is not significantly lower than 7 at α = 0.01, so there is statistically insignificant evidence to conclude that the population mean waiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is equal to 7 hours.

Read more on null hypothesis here: brainly.com/question/14913351

#SPJ1

4 0
1 year ago
John has a $2, $1, $0.50, $0.25, $0.10, and $0.05 coin in his pocket. How many different sums of money can he make?
Paladinen [302]

Answer:

64

Step-by-step explanation:

the different sum of money is 64

3 0
3 years ago
Samantha drove 440 km in 5 hours. She drove part of the way at 80 km/h and the rest at 100 km/h. What distance did she drive at
jarptica [38.1K]

Answer:

She drove 200km at 100km/hr and she drove 240km at 80km/hr

Step-by-step explanation:

2×100km/hr=200km and 80km/hr×3=240km/hr

200km+240km=440km

(2+3=5)

5 0
3 years ago
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