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egoroff_w [7]
3 years ago
8

29 thousands = blank

Mathematics
2 answers:
kifflom [539]3 years ago
8 0
29000? .... what exactly are you supposed to be finding
baherus [9]3 years ago
8 0
29 thousands = 29 *1,000 = 29,000
hope it helps
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The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in t
andreyandreev [35.5K]

Answer:

The test statistic is c. 2.00

The p-value is a. 0.0456

At the 5% level, you b. reject the null hypothesis

Step-by-step explanation:

We want to test to determine whether or not the mean waiting time of all customers is significantly different than 3 minutes.

This means that the mean and the alternate hypothesis are:

Null: H_{0} = 3

Alternate: H_{a} = 3

The test-statistic is given by:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

In which X is the sample mean, \mu is the value tested at the null hypothesis, \sigma is the standard deviation and n is the size of the sample.

Sample of 100 customers.

This means that n = 100

3 tested at the null hypothesis

This means that \mu = 3

The average length of time it took the customers in the sample to check out was 3.1 minutes.

This means that X = 3.1

The population standard deviation is known at 0.5 minutes.

This means that \sigma = 0.5

Value of the test-statistic:

z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}

z = \frac{3.1 - 3}{\frac{0.5}{\sqrt{100}}}

z = 2

The test statistic is z = 2.

The p-value is

Mean different than 3, so the pvalue is 2 multiplied by 1 subtracted by the pvalue of Z when z = 2.

z = 2 has a pvalue of 0.9772

2*(1 - 0.9772) = 2*0.0228 = 0.0456

At the 5% level

0.0456 < 0.05, which means that the null hypothesis is rejected.

7 0
3 years ago
What is the measure of angle 1?
Goryan [66]
The measure of angle 1 is 75°. Hope you get it.
3 0
3 years ago
Read 2 more answers
A store owner wants to develop a new snack mix by mixing chocolate and trail mix. How many pounds of chocolate costing $13.20 pe
Stells [14]

Answer:

13lbs

Step-by-step explanation:

x = number of pounds of chocolate/lbs

13.20(x) + 3.90(10) = 9.16(x + 10)

13.2x + 39 = 9.16x + 91.6 (x100)

1320x + 3900 = 916x + 9160

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8 0
3 years ago
Use the following step as a guide to solve the following equation. Write out your work for all steps to solve the equation.
Luda [366]

Answer:

Step-by-step explanation:

Use the following step as a guide to solve the following equation. Write out your work for all steps to solve the equation.

2X - 5 = 3(4x + 5)

Steps

Step

Distributive Property

Step 2. Move variables to one side of

6 0
2 years ago
I got 10 but can someone make sure because I want to get a 100
Sati [7]

Answer:

i think 10

Step-by-step explanation:

6 0
3 years ago
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