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2 years ago

Please help couldn't solve this either help very needed !!

Mathematics

1 answer:

vazorg [7]2 years ago

3 0

Answer: $36^{\circ}$

Step-by-step explanation:

By the corresponding angles theorem,

$5x+1=8x-20\\1=3x-20\\21=3x\\x=7\\\\m\angle 2=8(7)-20=\boxed{36^{\circ}}$

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Step-by-step explanation:

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4 years ago

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3 years ago

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3 years ago

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3 years ago

Using the simple random sample of weights of women from a data set, we obtain these sample statistics: nequals45 and x overbar

Tomtit [17]

Answer: (141.1, 156.48)

Step-by-step explanation:

Given sample statistics : $n=45$

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a) We know that the best point estimate of the population mean is the sample mean.

Therefore, the best point estimate of the mean weight of all women = $\mu=148.79\text{ lb}$

b) The confidence interval for the population mean is given by :-

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Given : Significance level : $\alpha=1-0.90=0.1$

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Hence, the 90% confidence interval estimate of the mean weight of all women= (141.1, 156.48)

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3 years ago