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GrogVix [38]
3 years ago
9

A television sports commentator wants to estimate the proportion of Americans who follow professional football. What sample size

should be obtained if he wants to be within 3 percentage points with 95% confidence if
(a) he uses a 2010 estimate of 53% obtained from a Harris poll?
(b) he does not use any prior estimates?
(c) Why are the results from parts (a) and (b) so close?
Mathematics
1 answer:
Lesechka [4]3 years ago
8 0

Answer:

A.1,063

B.1.067

C.Since 0.2491 is close 0.25 this means that the results from parts (a) and (b) are close.

Step-by-step explanation:

A. If he uses a 2010 estimate of 53% obtained from a Harris poll

Since E is 0.03

The next stel is to find Z using this formula

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Write "x is less than or equal to zero" three different ways.
garik1379 [7]
The expression "x is less than or equal to zero" can be written in several forms; some examples, however, could be:

x ≤ 0
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3 years ago
What is the domain, range, and function? {(-3, 3), (1, 1), (0, -2), (1,4), (5, -1)}
wolverine [178]

The domain are all the inputs, that is; the x-values

Domain = { -3, 0, 1, 5}

The range are all the output, that is the y-values

Range = { 3, 1, -2, 4, -1}

This is just a relation and not a function, as we have more than 2 same value of x

8 0
1 year ago
What is 11/12 minus 3/8
Mrac [35]

Answer: \frac{13}{24}

Step-by-step explanation: 11/12 - 3/8

1. First, we will find a common denomenator. It needs to be the least common factor, or the answer will not be in its simplist form. Let's take a look at the multiples of 12 and 8.

12: 12, 24, 36, 48, 60, 72, 84, 96

8: 8, 16, 24, 32, 40, 48, 56, 64, 72

2. Next, we will choose the smallest common multiple. That would be 24.

3. Now, we will work this out.

11/12 = 22/24

3/8 = 9/24

4. Subtract.

22/24 - 9/24

= 13/24

= \frac{13}{24}

I found the denomenators by multiplying.

Hope this answer helped!

8 0
3 years ago
- Another way to multiply decimals is to multiply as you would with
oksano4ka [1.4K]
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Hope this helps
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What is the length of PR?
GuDViN [60]

Answer:

you have to provide a picture or something as well

Step-by-step explanation:

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