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azamat
3 years ago
14

A 98% confidence interval for a proportion is found to be (0.47, 0.53). What is

Mathematics
1 answer:
Tcecarenko [31]3 years ago
8 0

Answer: .50

Step-by-step explanation:

A pex

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Find the missing length for the right triangle described below. B = 21 ft, c=27 ft. Find side a. Round to the nearest whole numb
maksim [4K]

Answer:

16.97 ft

Step-by-step explanation:

According to the scenario, computation of the given data are as follows,

Side B = 21 ft

Side c = 27 ft

As we know, formula for right triangle is as follows,

a^{2} + b^{2} = c^{2}

a^{2} = c^{2} - b^{2}

So, by putting the value in the formula, we get,

a^{2} = 27^{2} - 21^{2}

a^{2} = 729 - 441

a^{2} = 288

a = 16.97 ft

Hence, the length of the side  for the right triangle is 16.97ft.

6 0
3 years ago
How many and what type of solutions does the equation have?<br><br> 2k² = 9 + 3k
anzhelika [568]

Answer:

Step-by-step explanation:

5 0
3 years ago
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Sandy sold half of her comic books and then brought 6 more.She now has 11.How many did she begin with?
andreyandreev [35.5K]
10. 11 - 6 = 5 x 2 = 10 :)
8 0
3 years ago
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Historical data for a local manufacturing company show that the average number of defects per product produced is 2. In addition
charle [14.2K]

Answer:

The probability that there will be a total of 7 defects on four units  is 0.14.

Step-by-step explanation:

A Poisson distribution describes the probability distribution of number of success in a specified time interval.

The probability distribution function for a Poisson distribution is:

P(X = x)=\frac{e^{-\lambda}\lambda^{x}}{x!}, x=0,1,2,3,...

Let <em>X</em> = number of defects in a unit produced.

It is provided that there are, on average, 2 defects per unit produced.

Then in 4 units the number of defects is, (2\times4)=8.

Compute the probability of exactly 7 defects in 4 units as follows:

P(X = x)=\frac{e^{-\lambda}\lambda^{x}}{x!}\\P(X=7)=\frac{e^{-8}8^{7}}{7!}\\=\frac{0.0003355\times2097152}{5040}\\ =0.1396\\\approx0.14

Thus, the probability of exactly 7 defects in 4 units is 0.14.

8 0
3 years ago
Turn 25/4 into a mixed number
horsena [70]
Mixed number is 6 1/4





3 0
3 years ago
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