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3 years ago

Can someone help me with number 4 plz I will give 30 points

Mathematics

2 answers:

djyliett [7]3 years ago

7 0

Answer:

Yes

Step-by-step explanation:

kifflom [539]3 years ago

4 0

Answer: No it is not linear

Step-by-step explanation:

As #of classes increase, free time deceases. Linear equation is when x increase, y also increases. So it is not linear.

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Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimeters,

tiny-mole [99]

Answer:

Probability that the sample mean would be greater than 141.4 millimetres is 0.3594.

Step-by-step explanation:

We are given that Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 141 millimetres, and a standard deviation of 7.

A random sample of 39 steel bolts is selected.

Let $\bar X$ = sample mean diameter

The z score probability distribution for sample mean is given by;

Z = $\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }$ ~ N(0,1)

where, $\mu$ = population mean diameter = 141 millimetres

$\sigma$ = standard deviation = 7 millimetres

n = sample of steel bolts = 39

Now, Percentage the sample mean would be greater than 141.4 millimetres is given by = P( $\bar X$ > 141.4 millimetres)

P( $\bar X$ > 141.4) = P( $\frac{ \bar X-\mu}{\frac{\sigma}{\sqrt{n} } } }$ > $\frac{141.4-141}{\frac{7}{\sqrt{39} } } }$ ) = P(Z > 0.36) = 1 - P(Z $\leq$ 0.36)

= 1 - 0.6406 = 0.3594

The above probability is calculated by looking at the value of x = 0.36 in the z table which has an area of 0.6406.

8 0

3 years ago

lesya [120]

Answer:

Quadratic Binomial

Step-by-step explanation:

6 0

3 years ago

Water goes over a waterfall at a rate of 162 1/2 gallons every 15 minutes. Which would not be a proportion you could use to solv

enot [183]

Answer: See explanation

Step-by-step explanation:

You didn't give the options but let me help out.

First, we need to convert 2 2/3 hours to minutes. This would be:

= 2 2/3 × 60 minutes

= 8/3 × 60 minutes

= 160 minutes

Since water goes over a waterfall at a rate of 162 1/2 gallons every 15 minutes. The the gallons of water going over the waterfall in 2 2/3 hours would be:

= (162 1/2 × 2 2/3hours) / 15 minutes

= (162 1/2 × 160) / 15

= 1733 1/3 gallon

8 0

3 years ago

Read 2 more answers

Help------------------------------------

Liula [17]

Answer:

7)141

8)65

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

One number is six less than two times another. If their sum is increased by two, the result is fourteen. Find the numbers.

7nadin3 [17]

Answer:

2x-6+2=14

Step-by-step explanation:

2x-6+2=14

2x-4=14

2x=14-4

2x=10

x=5

5 0

3 years ago