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ipn [44]
3 years ago
6

A newsletter publisher believes that 64d% of their readers own a Rolls Royce. A testing firm believes this is inaccurate and per

forms a test to dispute the publisher's claim. After performing a test at the 0.020.02 level of significance, the testing firm decides to reject the null hypothesis. What is the conclusion regarding the publisher's claim
Mathematics
1 answer:
fgiga [73]3 years ago
6 0

Answer:

Step-by-step explanation:

The null hypothesis

H_o:p=0.64

The alternative hypothesis

H_1:p \neq 0.64

At 0.02 level of significance,

the testing firm rejects the null hypothesis.

This implies that the rejection of the null hypothesis shows that there is sufficient evidence to reject a newsletter publisher who believes that 64% of their readers own a Rolls Royce.

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The following data is from a simple random sample of 12 students GPAs. 3.12 2.45 4.0 3.76 3.54 2.78 3.39 3.21 1.98 3.43 3.98 2.7
Rufina [12.5K]

Answer: 3. 2

Step-by-step explanation:

Given the data:

3.12 2.45 4.0 3.76 3.54 2.78 3.39 3.21 1.98 3.43 3.98 2.77

Point estimate of population mean :

Σx / N

(3.12 + 2.45 + 4.0 + 3.76+ 3.54 + 2.78 + 3.39 + 3.21 + 1.98 + 3.43 + 3.98 + 2.77)

= 38.41 / 12

= 3.2008

4 0
3 years ago
A manager needs to order company shirts for each employee. She was quoted the following rates. If she orders 75 shirts and passe
docker41 [41]
The answer is B.$7.47.

Let's first calculate how much in total 75 shirts cost:
- first 19 (less than 20) cost $10:         19 * $10 = $190
- the next 30 cost $8:                         30 *  $8 = $240
- the rest (26 = 75 - 19 - 30) cost $5: 26 *  $5 = $130

So, in total 75 shirts cost $560:
19 * $10 + 30 * $8 + 21 * $5 = $190 + $240 + $130 = $560

Since 75 shirts are ordered, there must be 75 employees, so each employee must pay $7.47:
$565 ÷ 75 = $7.47
7 0
3 years ago
Read 2 more answers
PLS HELP DUE SOON!! tyyy
Pie

Answer:

b AND e

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which of the following equations will produce the graph shown?
Artemon [7]
Try this option (it is not the only way):
the points (0;0) and (2;2) belong to the curve. Using the coordinates of these points it is possible to calculate the equation.
y= \frac{1}{2}x^2;
5 0
3 years ago
89,678 round to the nearest hundred thousand
Elodia [21]
100,000 would be the answer

6 0
3 years ago
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