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sergij07 [2.7K]

3 years ago

12

A store sells rectangular plywood in different sizes The dimensions for some of the pieces of plywood are shown in the table bel

ow.
Size Length Width

Small. 4. 2.

Large. 8. 4.

1 answer:

Alinara [238K]3 years ago

3 0

What is the question

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David owns 24% of a partnership. Robert owns 48% of the partnership. If Sam is the third partner, what percent of the partnershi

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28%

Step-by-step explanation:

100-72= 28%

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Suppose you are planning a ward party. Last year, there was a similar activity and 150 people attended. If the ward has grown by

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Answer:

164 people

Step-by-step explanation:

100% represents the 150 people who attended last year.

this year , there is an increase of 9% , which will make the total percentage to be 109%.

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3 years ago

You decide to go to the movies for your birthday. You need to buy 8 student tickets and 2 adult tickets. If student tickets are

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Answer:

$112.80

Step-by-step explanation:

You are buying 8 student tickets, each costing $10.68. Multiply 8 with 10.68:

10.68 x 8 = 85.44

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Next, add the two costs together:

27.36 + 85.44 = 112.80

$112.80 is your total cost.

~

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A recipe calls for 2/3 cup of butter. Sticks of butter are divided into 1/4 cup sections. How many sections of butter will the r

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To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine foun

QveST [7]

Answer:

We conclude that the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 31.7 milligrams

Sample mean, $\bar{x}$ = 28.5 milligrams

Sample size, n = 9

Alpha, α = 0.05

Sample standard deviation, s = 2.8 milligrams

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 31.7\text{ milligrams}\\H_A: \mu < 31.7\text{ milligrams}$

We use One-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{28.5 - 31.7}{\frac{2.8}{\sqrt{9}} } = -3.429$

Now, $t_{critical} \text{ at 0.05 level of significance, 8 degree of freedom } = -1.860$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and accept the alternate hypothesis. We conclude that the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.

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4 years ago