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2 years ago

The questions on a multiple choice test have four answer choices.

Mathematics

1 answer:

Rasek [7]2 years ago

7 0

Answer: spinning a spinner with 4 equal sections 50 times

Step-by-step explanation:

The models that one can use to simulate the outcome of guessing the correct answers to a 50-question test will be to spinn a spinner with 4 equal sections 50 times.

Flipping a coin 50 times is wrong since the coin only has two outcomes which are head and tail. Rolling a 6-sided die 50 times is also wrong.

Therefore, the correct option is B.

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A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past

Volgvan

Answer: We reject the null hypothesis, and we use Normal distribution for the test.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis : $H_0:\mu\geq 50000$

Alternate hypothesis : $H_1:\mu$

There is 5% level of significance.

$\bar{X}=46800\\\\\sigma=9800\\\\n=29$

So, the test statistic would be

$z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{46800-50000}{\dfrac{9800}{\sqrt{29}}}\\\\z=-1.75$

Since alternate hypothesis is left tailed test.

So, p-value = P(z≤-2.31)=0.0401

And the P-value =0.0401 is less than the given level of significance i.e. 5% 0.05.

So, we reject the null hypothesis, and we use Normal distribution for the test.

4 0

3 years ago

mojhsa [17]

Answer:

84°

Step-by-step explanation:

Adjacent angles in a parallelogram are supplementary:

∠A = 180° -96°

∠A = 84°

5 0

3 years ago

James made a deposit in a savings account 5 years ago. The account pays 4% simple annual interest. Since then, he has earned $12

Lera25 [3.4K]

P=i/rt
P=120/0.04*5=600

3 0

3 years ago

Can someone check my answers and tell me if it’s right or not? Thank you so much :)

inessss [21]

Answer:

yes i think u are correct

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Please Help-

Sloan [31]

You take 94.5 and divide by 4.5 get 21

4 0

3 years ago

Read 2 more answers