2 years ago

Please help on #4

1 answer:

7 0

I don’t understand either sorry

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Mrrafil [7]

140 minutes because 40 x 3= 120+20=140

7 0

2 years ago

Advocard [28]

Answer:

Value of the test statistic, $z_{test} = - 1.17$

Step-by-step explanation:

Null hypothesis, $H_{0}: \mu = 53.9$

Alternative hypothesis, $H_{a} : \mu \neq 53.9$

Sample mean, $\bar{X} = 53.7$

Sample size, n = 110

Standard deviation, $\sigma = 1.8$

Significance level, $\alpha = 0.02$

The value of the test statistics is given by the formula:

$z_{test} = \frac{\bar{X} - \mu}{\frac{\sigma}{\sqrt{n} } } \\z_{test} = \frac{53.7 - 53.9}{\frac{1.8}{\sqrt{110} } } \\z_{test} = - 1.17$

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2 years ago

GREYUIT [131]

Answer:

C, 15

Step-by-step explanation:

i looked it up

5 0

2 years ago

Degger [83]

Answer: Line A has a slope of 3/4 and Line B has a slope of 5/6

Step-by-step explanation: Look at the attachment

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2 years ago

Anna [14]

It would come out to be $41.8275, so if you round it would cost $41.83.

4 0

3 years ago