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Tems11 [23]
4 years ago
5

In performing a chi-square goodness-of-fit test for a normal distribution, a researcher wants to make sure that all of the expec

ted cell frequencies are at least five. The sample is divided into 7 intervals. The second through the sixth intervals all have expected cell frequencies of at least five. The first and the last intervals have expected cell frequencies of 1.5 each. After adjusting the number of intervals, the degrees of freedom for the chi-square statistic is____________.a. 2b. 3c. 5d. 7
Mathematics
1 answer:
Sholpan [36]4 years ago
3 0

Answer:

The degrees of freedom for the chi square statistic is 7-4=3

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Answer:

23/96 =  about 24%

Step-by-step explanation:

42 + 23 + 31 = 96 students total in survey

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3 years ago
What is equivalent to the ratio 5/13
Rudik [331]
10/26, you can just multiply each number in the fraction by 2 :)
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Help me<br> Plzzzzzzzzzzzzzzzzz
Kaylis [27]

Answer:

142 degrees

Step-by-step explanation:

Since line M is straight, we know that the sum of the measure of angle 7 and 38 degrees must be 180. So we can set up an equation. Let's set the measure of angle 7 to be x

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3 years ago
Leslie ran 3 mile race. The second mile took her 10 percent longer than the first one and the third mile took her 24 seconds lon
Brilliant_brown [7]

Answer:

8.8 Minutes or 528 Second.

Step-by-step explanation:

↓[ Read Below ]↓

Important Info:

Leslie Ran 3 Mile Race.

2nd Mile = 10% longer than 1st and 3rd Miles took her 24s longer than 2nd Mile

Question to Answer:

Leslie’s total time for the race was 26 minutes how long did the second mile take her?

Explanation/Solution:

Let for first mile, she took x minutes . And second mile took her 10 percent longer, so second mile took

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So third mile took

1.1x+24/60 = (1.1x+0.4) Minutes

And the total time for the race was 26 minutes, that is

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3.2x=26-0.4

3.2x=25.6

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= 1.1 (8) = 8.8 Minutes

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[RevyBreeze]

4 0
2 years ago
A man purchased a magazine at the airport for $ 2.79 .
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Answer:

4%

Step-by-step explanation:

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7 0
4 years ago
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