Please help me with this!!!!!

Mathematics

1 answer:

mihalych1998 [28]3 years ago

8 0

Answer:

The answer is C.

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Who invented the square root of negative one?

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How much wood could a woodchuck chuck<br> If a woodchuck could chuck wood?

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Step-by-step explanation:

New York state wildlife expert Richard Thomas found that a woodchuck could (and does) chuck around 35 cubic feet of dirt in the course of digging a burrow. Thomas reasoned that if a woodchuck could chuck wood, he would chuck an amount equivalent to the weight of the dirt, or 700 pounds.

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3 years ago

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The weight of Pinky is 30 3/4kg and the weight of Dolma is 30 1/4 kg. Who has more weight and by how much?

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Answer:

Pinky weighs more by 2KG

Step-by-step explanation:

Pinky is heavier, and weighs more than Dolma by 2 kg.

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2 years ago

In order to estimate the difference between the average hourly wages of employees of two branches of a department store, two ind

liberstina [14]

Answer:

Step-by-step explanation:

Hello!

You have two populations of interest and want to compare them. If you define the study variables as:

X₁: average hourly wages of an employee of the Downtown store.

n₁= 25

X[bar]₁= $9

S₁= $2

X₂: average hourly wages of an employee of the North Mall store.

n₂= 20

X[bar]₂= $8

S₂= $1

Both samples taken are independent, assuming that both populations are normal and that their population variances are equal I'll use the Student's-t statistic with a pooled sample variance to calculate the Confidence interval:

95% CI for μ₁ - μ₂

(X[bar]₁-X[bar]₂) ± $t_{n_1+n_2-2; 1-\alpha /2} * (Sa*\sqrt{\frac{1}{n_1} +\frac{1}{n_2} } )$