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bearhunter [10]
3 years ago
10

I need help with this

Mathematics
1 answer:
otez555 [7]3 years ago
7 0

Answer:

what

Step-by-step explanation:

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7 . Sampling distribution of the difference between two means A statistician is interested in the effectiveness of a weight-loss
UkoKoshka [18]

Answer:

0.229

Step-by-step explanation:

Given that the difference between the two sample means follows anormal distribution with a mean of11.00 and standard deviation equal to1.4387

A statistician is interested in the effectiveness of a weight-loss supplement. She randomly selects two independent samples. Individuals in the first sample of size n1 = 24 take the weight-loss supplement. Individuals in the second sample of size n2 = 21 take a placebo. Individuals in both samples follow identical exercise and diet programs. At the end of the study, the statistician measures the weight loss (in percent) of each participant.

We find that mean difference actual = 13-2 = 11

Probability that difference >12 =P(Z>\frac{12-11}{1.3487} \\)

=P(Z>0.742)=.0.229

3 0
3 years ago
Rewrite 9.524 as a mixed number in lowest terms
Anit [1.1K]

Answer:   9 132

                 ----------

                    250

9.524 = 9 + 0.524 = 9 + 524       =  9 524 =    9 524:2 = 9 262 =   9 134

                                      -----------       -----------       -----------    ---------     ---------

                                        1000             1000        1000:2     500          250

8 0
3 years ago
Read 2 more answers
What is the rule for the reflection ?
Zolol [24]

Answer:

This idea of reflection correlating with a mirror image is similar in math.

This complete guide to reflecting over the x axis and reflecting over the y axis will provide a step-by-step tutorial on how to perform these translations.

 First, let’s start with a reflection geometry definition

Math Definition: Reflection Over the X Axis

A reflection of a point, a line, or a figure in the X axis involved reflecting the image over the x axis to create a mirror image. In this case, the x axis would be called the axis of reflection.

Math Definition: Reflection Over the Y Axis

A reflection of a point, a line, or a figure in the Y axis involved reflecting the image over the Y axis to create a mirror image. In this case, theY axis would be called the axis of reflection.

What is the rule for a reflection across the X axis?

The rule for reflecting over the X axis is to negate the value of the y-coordinate of each point, but leave the x-value the same.

3 0
2 years ago
Solve: 5y – 3.5 = 10.5
Svetlanka [38]

Answer:2.8

Step-by-step explanation:add 3.5 to the 10.5 which equals 14 then you divide 5 by 14 to get the y alone and it equals 2.8

7 0
3 years ago
Read 2 more answers
a girl showing half her body gets answered quicker then a math post. all I want is the answer to this and no one helps me sooooo
Gre4nikov [31]
The percent error would be 5.8%.
3 0
3 years ago
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