Using the t-distribution, it is found that:
a. The <u>margin of error</u> is of 4.7 homes.
b. The 98% confidence interval for the population mean is (19.3, 28.7).
The information given in the text is:
- Sample mean of
. - Sample standard deviation of
. - Sample size of
.
We are given the <u>standard deviation for the sample</u>, which is why the t-distribution is used to solve this question.
The confidence interval is:
The margin of error is:
Item a:
The critical value, using a t-distribution calculator, for a two-tailed <u>98% confidence interval</u>, with 23 - 1 = <u>22 df</u>, is t = 2.508.
Then, the <em>margin of error</em> is:
Item b:
The interval is:
The 98% confidence interval for the population mean is (19.3, 28.7).
A similar problem is given at brainly.com/question/15180581
Y=-7x-5
9=-7(-2)-5
9=14-5
9=9
Please mark the brainliest, if you think i helped!
The answer is 0.04444... or 2/45. Whichever is more useful to you.
Hey!
So we have 6 multiplied by -12 and that is over 10
so we are multiplying a positive number by a negative number. When you do that the answer will be a negative number.
Now we have -72/10
we can simplify that more
divide the numerator and denominator by 2 because that is the largest number that is divisible by both number
now it is -36/5
The answer is -36/5
Hope this helps!
<span>Welll since</span> <span>is</span> a percentage we <span>now is</span> over 100...
225/100
We can simplify this...9/4
That is our fraction... In mix number is...
2 25/100
We can simplify 25 and 100 dividing them by 25 <span>sooo</span>...
The Mix number is
2 1/4
Percentage
225%
Fraction
225/100
<span>or</span>
9/4
Mix Number
2 25/100
<span>or</span>
2 1/4
It can also be seen as...
2.25
Hope it help :3
