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Snowcat [4.5K]
3 years ago
11

One indicator of physical fitness is a resting pulse rate. Ten men volunteered to test an exercise device advertised on televisi

on by using it three times a week for 20 minutes and ten other similar men did not exercise. Their resting pulse rates (beats per minute) were measured after 6 weeks. Results are summarized below. Researchers want to know if there is evidence that exercise can reduce resting pulse rates.
exercise group mean = 82.40
non-exercise group mean = 85.20
standard error for the difference in the two sample means = 6
1. With the difference in population means defined as "exercise mean minus non-exercise mean" which of the following presents the correct test statistic?
O (82.4 - 85.2) / 6
O (85.2 - 82.4) / 6
O (82.4 - 85.2) / √ (6)
O (85.2 - 82.4) / √ (6)
Mathematics
1 answer:
Arlecino [84]3 years ago
4 0
Yep that is right I totally agree
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2 years ago
Find the length of segment GH.<br> 21<br> 12<br> F
jek_recluse [69]

Answer:

GH = 9

Step-by-step explanation:

FH=FG+GH

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3 years ago
- 4x + 3y +z, if x=-5, y=2 and z=0
Gala2k [10]
  • Answer:

<em>26</em>

  • Step-by-step explanation:

<em>- 4x + 3y + z =</em>

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4 0
3 years ago
Read 2 more answers
Andre draws a tape diagram for 3÷2/3
bija089 [108]

Answer:

No I do not agree with Andre says that 3 divided by 2/3 Solving for 3 ÷ 2/3

3 ÷ 2/3

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= 9/2

= 4 1/2

Therefore, 3 divided by 2/3 is 4 1/2

Andre's reasoning is wrong.

Step-by-step explanation:

It is incorrect

Let's divide and compare the sum

3 : 2/3 = 3*3/2 = 9/2 = 4 1/2

and

There are four 2/3 fractions and one 1/3 fraction

The 1/3 fraction is 1/2 of 2/3 fraction so instead of counting 1/3 as 1/3 it should be counted as 1/2

4 0
2 years ago
1. What is the total cost of a $95.00 item with a sales tax of 6%?
Reptile [31]

Since the sales tax is 6%, the object will cost 1.06 (100% + 6%) times the original value.

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The object will cost $100.70.

Let me know if you need any clarifications, thanks!

4 0
3 years ago
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