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3 years ago

Alana is working on creating a scale

Mathematics

1 answer:

Zielflug [23.3K]3 years ago

4 0

Answer:

2 3/4

Step-by-step explanation:

every 6 ft is equivelent to a half of an inch. So if you take 33 ft and divide it by 6 to find how many 6 ft are in the bakery's length you will get 5.5 so you know there are 5 and a half, halves in the bakery's length. so you have 5 halves, which is 2 and a half, plus you have a half of a half, so 1/4. adding this all together you have 2 and 3/4 for your total scaled drawing.

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A pyramid is placed inside a prism as shown. The pyramid has the same base area, B, as the prism but half the height, h, of the

klemol [59]

The general formula of a pyramid with any base is 1/3 bh where b is the area of the base and h is the height. In this case, the height of the pyramid is said to be twice the height of the prism, h. Hence the area becomes 1/3 b*2h or equal to option A. 2/3

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3 years ago

Use mental math and a pattern to find the product of 70*300

Dmitrij [34]

70*300

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3 years ago

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Test the claim below about the mean of the differences for a population of paired data at the level of significance α Assume the

Evgen [1.6K]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The correct option is F

$t = 1.17$

$t_ {\alpha , df} =t_ {0.10 , 8} = 1.86$

Since the test statistics is outside the rejection region , we fail to reject the null hypothesis ,There is no statistically significant evidence to reject the claim

Step-by-step explanation:

From the question we are told that

The claim is $\mu = 0$

Hence

The null hypothesis is $H_o : \mu = 0$

The alternative is $H_a : \mu \ne 0$

Generally the test statistics is mathematically represented as

$t = \frac{\= d - \mu_d }{ \frac{s_d}{ \sqrt{n} } }$

=> $t = \frac{3.5 -0 }{ \frac{8.94}{ \sqrt{9} } }$

=> $t = 1.17$

Generally the degree of freedom is mathematically represented as

$df = n- 1$

$df = 9 - 1$

$df = 8$

From the student t-distribution table the critical value of $\alpha$ at a degree of freedom of 8 is

$t_ {\alpha , df} =t_ {0.10 , 8} = 1.86$

Since the $t_ {\alpha , df}$ is outside the rejection region , we fail to reject the null hypothesis ,There is no sufficient evidence to reject the claim

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4 years ago

The narrower the confidence interval, the more informative it is. What are the two main ways in which this can be achieved?

Mama L [17]

2 ways:

1. narrow confidence interval

2. confidence interval

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4 years ago

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A researcher selects a sample of participants to test for differences in employment rates among part-time and full-time teachers

maxonik [38]

Answer: proportionate

Step-by-step explanation:

Proportional quota sampling is when the total number of people that are to be surveyed are decided in advance. This form of sampling is usually used in opinion polls and surveys.

Since due to the fact that there are many more women in teaching jobs than men, the researcher selected more women than men for her study to ensure that it represented the actual distribution of men and women teachers in the job, then this was decided in advance and indicates the proportionate quota sampling.

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3 years ago