3 years ago

HELP WILL MARK BRAINLIEST!!! 20 POINTS

Mathematics

1 answer:

Vlad [161]3 years ago

7 0

Answer: it always increa

Step-by-step explanation:

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Please help, will mark brainliest

Delicious77 [7]

Sorry it took so long, here is your answer:

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3 years ago

A simple random sample of 44 men from a normally distributed population results in a standard deviation of 10.7 beats per minute

sladkih [1.3K]

Answer:

Step-by-step explanation:

The Hypothesis :

H0 : σ = 10

H1 : σ ≠ 10

The Chisquare statistic, χ² ;

χ² = [(n-1) * s²] ÷ σ²

Sample size, n = 44 ; sample Standard deviation, s = 10.7 ; population standard deviation, σ = 10

χ² = [(44 - 1) * 10.7²] ÷ 10²

χ² = [43 * 114.49] ÷ 100

χ² = [4923.07] ÷ 100

χ² = 49.2307

Using the Pvalue from Chisquare calculator :

degree of freedom, df = n - 1 = 44 - 1 = 43

Pvalue = 0.238

7 0

3 years ago

A driveway has an area of 96 square feet. The width of the driveway is 8 feet.

Mrrafil [7]

Answer:

12 feet

Step-by-step explanation:

A driveway is rectangular in shape.

Therefore we can calculate the area using the formula;

$A = L \times W$

From the question;

The area,A=96 feet square

The width, W=8 feet

We substitute this values into the formula to find the length, L.

This implies that

$96 =L \times 8$

Dividing through by 8.

$\implies \frac{96}{8}= \frac{L \times 8}{8}$

$\implies L = 12$

Hence,the length of the driveway is 12 feet.

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3 years ago

There are four people in a family-a father, a mother and two children-and they have won two tickets to go to Disneyland for a we

Alchen [17]

Where are the options?

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2 years ago

How many vertices does a rectangular prism have?

erma4kov [3.2K]

Answer:

"if tom had a cube a rectangular prism and a triangular prism, then the cube has 8 vertices, a rectangular prism has 5 vertices."

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2 years ago