3 years ago

Please help this is due in 10 minutes

Mathematics

1 answer:

mafiozo [28]3 years ago

4 0

Answer:

the answer is 4.

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If Jose earned 145.60 for 7 hours, how many hours would he have to work to earn $83.20?

erik [133]

Answer:

4 hours

Step-by-step explanation:

Each hour: 145.60/7 = 20.80

83.20/20.80 = 4

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3 years ago

What is the least common mutliple of 10 and 12?

GalinKa [24]

Answer:

Step-by-step explanation:

You can divide both of them by 2

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3 years ago

Read 2 more answers

A survey of 100 similar-sized hospitals revealed a mean daily census in the pediatrics service of 27 with a standard deviation o

Vinil7 [7]

Answer:

We conclude that the mean is greater than 25.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 25

Sample mean, $\bar{x}$ = 27

Sample size, n = 100

Alpha, α = 0.05

Sample standard deviation, s = 6.5

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 25\\H_A: \mu> 25$

We use One-tailed(right) z test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{27 - 25}{\frac{6.5}{\sqrt{100}} } = 3.07$

Now, $z_{critical} \text{ at 0.05 level of significance } = 1.645$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis.

Thus, the mean is greater than 25.

3 0

3 years ago

Please help me I need to pass

laila [671]

I'll pick B Hope this helps

7 0

3 years ago

In 20 minutes, i ate 1 1/2 sub sandwiches. <br /><br />

shtirl [24]

A. sandwiches per hours is 4.5/hour
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3 years ago