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AlexFokin [52]
3 years ago
12

Help plzz and will give brainlenley

Mathematics
2 answers:
Pepsi [2]3 years ago
3 0

First one is 50

Second one is 6.8

last one is 51.6

sweet-ann [11.9K]3 years ago
3 0

Nearest whole number would be 50.2. Number 2 would be 6.8. Number 3 would be 51.6.


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Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 144 millimeters,
valentinak56 [21]

Answer:

The probability that the sample mean would differ from the population mean by more than 2.6 mm is 0.0043.

Step-by-step explanation:

According to the Central Limit Theorem if we have a population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample  means will be approximately normally distributed.

Then, the mean of the distribution of sample mean is given by,

\mu_{\bar x}=\mu

And the standard deviation of the distribution of sample mean  is given by,

\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}

The information provided is:

<em>μ</em> = 144 mm

<em>σ</em> = 7 mm

<em>n</em> = 50.

Since <em>n</em> = 50 > 30, the Central limit theorem can be applied to approximate the sampling distribution of sample mean.

\bar X\sim N(\mu_{\bar x}=144, \sigma_{\bar x}^{2}=0.98)

Compute the probability that the sample mean would differ from the population mean by more than 2.6 mm as follows:

P(\bar X-\mu_{\bar x}>2.6)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}} >\frac{2.6}{\sqrt{0.98}})

                           =P(Z>2.63)\\=1-P(Z

*Use a <em>z</em>-table for the probability.

Thus, the probability that the sample mean would differ from the population mean by more than 2.6 mm is 0.0043.

8 0
3 years ago
(14 + 3/2b)-(1+8/2b)
Ray Of Light [21]

3b/2 +9

hopefully that helps

7 0
3 years ago
Read 2 more answers
Identify tan P as a fraction and as a decimal rounded to the nearest hundredth. HELP PLEASE!!
KonstantinChe [14]
<h3>Answer: Choice C</h3>

================================================

Work Shown:

Reference angle = P

Opposite side = QR = 8.5

Adjacent side = QP = 16

tan(angle) = opposite/adjacent

tan(P) = QR/QP

tan(P) = 8.5/16

tan(P) = 0.53125

tan(P) = 0.53

6 0
3 years ago
The glass part of a window is 32 1/2 inches wide. Including the frame on the left and right sides, the total width is 42 inches.
Lisa [10]

The glass part of the frame is an illustration of fractions

The width of each side of the frame is 5 1/4 inches

<h3>How to determine the width of each side?</h3>

The given parameters are:

  • Total width = 42 inches
  • Glass part = 32 1/2 inches

Represent the width of each side with x.

So, we have:

Glass part + 2x = Total width

Substitute known values

31 1/2 + 2x = 42

Subtract 31 1/2 from both sides

2x = 10 1/2

Divide both sides by 2

x = 5 1/4

Hence, the width of each side of the frame is 5 1/4 inches

Read more about fractions at:

brainly.com/question/1622425

3 0
2 years ago
What is the slope of the line shown below?
Nookie1986 [14]
It would be C because using the methof of rise over run, the change in x is 6 while the change in y is 17. So 14/6 woll get you 7/3.
6 0
3 years ago
Read 2 more answers
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