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Mashcka [7]
2 years ago
10

Market researchers selected a random sample of people from region a and a random sample of people from region b. The researchers

asked the people in the samples whether they had tried a new product. The difference between the sample proportions (b minus a) of people in the regions who indicated they had tried the new product was 0. 15. Under the assumption that all conditions for inference were met, a hypothesis test was conducted with the alternative hypothesis being that the population proportion of b is greater than that of a. The p-value of the test was 0. 34.
SAT
1 answer:
dlinn [17]2 years ago
7 0

The #15 is correct. B minus A. Your welcome!

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If an angle of a parallelogram is two-third of its adjacent angle, the smallest angle of the parallelogram is.
Harrizon [31]

If an angle of a parallelogram is two-third of its adjacent angle, then the smallest angle of the parallelogram is 72°. Adjacent angles exhibit a common side and a corner point.

Adjacent angles exhibit a common side and a corner point, although they do not overlap.

A parallelogram can be defined as a simple type of quadrilateral having two pairs of parallel sides.

A rectangle can in turn be defined as a parallelogram having four right angles (90°), thereby all rectangles represent quadrilaterals.

The sum of the adjacent angles of a parallelogram is equal to 180°.

In this case, we have  that the sum of adjacent angles >> X + 2/3 X = 180° >> X = 108° >> 2/3 X = 72°

Learn more about parallelograms here:

brainly.com/question/1563728

5 0
3 years ago
The managers of a brokerage firm are interested in finding out the effects of number of new clients that a broker brings into th
Gnom [1K]
1,5728 joke who’ve 23
7 0
3 years ago
the graph of f is given. state the numbers at which f is not differentiable. (enter your answers as a comma-separated list.)
artcher [175]

The numbers at which <em>f</em> is not differentiable are;<u> -1, and 2</u>

The reason the above list of numbers at which <em>f</em> is not differentiable are correct are given as follows:

<em>Question; Please find attached a graph that can be used to solve the question</em>

  • A function is not differentiable at a point where the  function has a discontinuity. That is a point on the graph were there is a break in the graph

Therefore, the given graph of <em>f</em> shows that <u>the function is not differentiable at x = -1</u>, the point where the graph has a discontinuity

  • A function is not differentiable at a point where the graph of the function has a kink or corner.

The graph of <em>f</em> has a kink at x = 2, therefore, <u>the function is also not differentiable at x = 2</u>

Learn more about differentiability of a function here:

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6 0
2 years ago
On the first of each month, stacie runs a 5k race. She keeps track of her times to track her progress. Her time in minutes is re
Natasha_Volkova [10]

Difference between the mean of the data, including the outlier and excluding the outlier is;

B: 0.93

<h3>Mean average</h3>

Her time in minutes for the given months are;

  • January = 41.55 minutes
  • July = 36. 38 minutes
  • Feb = 42.51 minutes
  • Aug = 38.48 minutes
  • Mar = 43. 01 minutes
  • Sept = 41.87 minutes
  • Apr = 39. 76 minutes
  • Oct = 51.32 minutes
  • May = 37. 32 minutes
  • Nov = 42.59 minutes
  • June = 35.28 minutes
  • Dec = 43.71 minutes

Looking at all the numbers, they largely range from 36 to 44 which means that the outlier is 51.32

Total number of minutes with outlier = 493.78 minutes

Number of months = 12

Thus;

Mean with outlier = 493.78/12

Mean with outlier = 41.15 minutes

Mean without outlier = (493.78 - 51.32)/(12 - 1)

Mean without outlier = 40.22 minutes

Thus;

Difference in both means = 41.15 - 40.22

Difference = 0.93

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6 0
2 years ago
A survey found that​ women's heights are normally distributed with mean
zheka24 [161]

Answer:

a. 99.30% of the woman meet the height requirement

b.  If all women are eligible except the shortest​ 1% and the tallest​ 2%, then height should be between 58.32 and 68.83

Explanation:

<em>According to the survey</em>, women's heights are normally distributed with mean 63.9 and standard deviation 2.4

a)

A branch of the military requires​ women's heights to be between 58 in and 80 in. We need to find the probabilities that heights fall between 58 in and 80 in in this distribution. We need to find z-scores of the values 58 in and 80 in. Z-score shows how many standard deviations far are the values from the mean. Therefore they subtracted from the mean and divided by the standard deviation:

z-score of 58 in= z=\frac{58-63.9}{2.4} = -2.458

z-score of 80 in= z=\frac{80-63.9}{2.4} = 6.708

In normal distribution 99.3% of the values have higher z-score than -2.458

0% of the values have higher z-score than 6.708. Therefore 99.3% of the woman meet the height requirement.

b)

To find the height requirement so that all women are eligible except the shortest​ 1% and the tallest​ 2%, we need to find the boundary z-score of the

shortest​ 1% and the tallest​ 2%. Thus, upper bound for z-score has to be 2.054 and lower bound is -2.326

Corresponding heights (H) can be found using the formula

2.054=\frac{H-63.9}{2.4}  and

-2.326=\frac{H-63.9}{2.4}

Thus lower bound for height is 58.32 and

Upper bound for height is 68.83

8 0
3 years ago
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