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2 years ago

Answer the following about estimating 502/8 .

Mathematics

2 answers:

djyliett [7]2 years ago

5 0

(a) The first answer is “A” because 480 / 8 is = 60

(b) a the answer is also “A” because 502 / 8 = 62.5, so it is a underestimate

Semmy [17]2 years ago

5 0

The answers are 60 and 70

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(1 pt) In a study of red/green color blindness, 950 men and 2050 women are randomly selected and tested. Among the men, 89 have

Ivahew [28]

Answer: (0.066,0.116)

Step-by-step explanation:

The confidence interval for proportion is given by :-

$p_1-p_2\pm z_{\alpha/2}\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}$

Given : The proportion of men have red/green color blindness = $p_1=\dfrac{89}{950}\approx0.094$

The proportion of women have red/green color blindness = $p_2=\dfrac{6}{2050}\approx0.003$

Significance level : $\alpha=1-0.99=0.01$

Critical value : $z_{\alpha/2}=z_{0.005}=\pm2.576$

Now, the 99% confidence interval for the difference between the color blindness rates of men and women will be:-

$(0.094-0.003)\pm (2.576)\sqrt{\dfrac{0.094(1-0.094)}{950}+\dfrac{0.003(1-0.003)}{2050}}\approx0.091\pm 0.025\\\\=(0.09-0.025,0.09+0.025)=(0.066,\ 0.116)$

Hence, the 99% confidence interval for the difference between the color blindness rates of men and women= (0.066,0.116)

4 0

3 years ago

What is the value of log <br><img src="https://tex.z-dn.net/?f=%20%7B16%7D%5E%7B4%7D%20" id="TexFormula1" title=" {16}^{4} " alt

Dmitriy789 [7]

65,536 I believe is the answer

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3 years ago

Read 2 more answers

Please only give me the check from numbers 1 to 5

Marizza181 [45]

Answer:

1) f=30

2) w=21

3) x=72

4) t=12

5) y=6

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2 years ago

A friend has a 83% average before the final exam for a course. That score includes everything but the final, which counts for 25

Klio2033 [76]

Answer:

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Step-by-step explanation:

Assuming the maximum score for the final is $100\%$ , we can multiply each score by its respective course weight and add them together to give a final score. If your friend did receive this maximum score of $100\%$ , their overall grade for the course would be: