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Bas_tet [7]
3 years ago
15

Yusef typed a 36 word paragraph in 2/3 minute.what is his typing speed in words per minute

Mathematics
1 answer:
lilavasa [31]3 years ago
5 0
Words over minutes.
So 36/(2/3)
Basically saying
36 * (3/2) = 54
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A survey of 300 union members in New York State reveals that 112 favor the Republican candidate for governor. Construct the 98%
Luden [163]

Answer:

a) z = 2.327

b) The margin of error is of 0.065.

c) The 98% confidence interval for the true population proportion of all New York State union members who favor the Republican candidate is (0.3083, 0.4383).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 300, \pi = \frac{112}{300} = 0.3733

a) 98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so z = 2.327 is the critical value.

b)

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

So, applying to this question:

M = 2.327\sqrt{\frac{0.3733(1-0.3733)}{300}} = 0.065

The margin of error is of 0.065.

c) Find confidence interval for the problem.

\pi - M = 0.3733 - 0.065 = 0.3083

\pi + M = 0.3733 + 0.065 = 0.4383

The 98% confidence interval for the true population proportion of all New York State union members who favor the Republican candidate is (0.3083, 0.4383).

3 0
3 years ago
What is the answer?
Aleonysh [2.5K]

Answer:

Not similar.

Step-by-step explanation:

The answer is D.

7 0
2 years ago
18÷6 solve it<br><br><br>answer:​
Oduvanchick [21]

Answer:3 is your answer

Step-by-step explanation:

3 x 6 = 18

8 0
2 years ago
(-6time + 3) + (5time -4)
Fynjy0 [20]

Answer:

-2

Step-by-step explanation:

18+-20

-2

3 0
3 years ago
The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs. The
faltersainse [42]

Answer:

34%

Step-by-step explanation:

Given that the distribution of daily light bulb request replacement is approximately bell shaped with ;

Mean , μ = 45 ; standard deviation, σ = 3

Using the empirical formula where ;

68% of the distribution is within 1 standard deviation from the mean ;

95% of the distribution is within 2 standard deviation from the mean

Lightbulb replacement numbering between ;

42 and 45

Number of standard deviations from the mean /

Z = (x - μ) / σ

(x - μ) / σ < Z < (x - μ) / σ

(42 - 45) / 3 = -1

This lies between - 1 standard deviation a d the mean :

Hence, the approximate percentage is : 68% / 2 = 34%

5 0
3 years ago
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