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BlackZzzverrR [31]
3 years ago
8

17,358 divided blank equals 789

Mathematics
1 answer:
Otrada [13]3 years ago
6 0
1= 22.08
2= 25704
3= 587
4= 610
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In a random sample of 18 families, the average weekly food expense was $95.60 with a sample standard deviation of $22.50. Determ
shepuryov [24]

Answer:

t-distribution should be used to construct a confidence interval.

Step-by-step explanation:

We are given that a random sample of 18 families, the average weekly food expense was $95.60 with a sample standard deviation of $22.50.

We have to determine whether a normal distribution (Z values) or a t- distribution should be used or whether neither of these can be used to construct a confidence interval.

<em><u>Since in this question we are provided with;</u></em>

Sample average weekly food expense, \bar X = $95.60

Sample standard deviation, s = $22.50

Sample of families, n = 18

The distribution that we will use here to construct a confidence interval will be <u>t-distribution</u> because in the question we don't know anything about population standard deviation (\sigma) .

Normal distribution is used when we know population standard deviation (\sigma).

So, the pivotal quantity for confidence interval that will be used is One-sample t-test statistics;

                P.Q. = \frac{\bar X -\mu}{\frac{s}{\sqrt{n} } } ~ t_n_-_1

Therefore, t-distribution should be used to construct a confidence interval.

3 0
3 years ago
Figure out what the percent is
DaniilM [7]

The percentage of data that is roughly greater than 66, as displayed in the box plot, is 100%.

<h3>How to Determine a Percentage of a Data Represented in a Box Plot?</h3>

In a box plot, we have the following displayed five-number summary which tells what percentage of the data distribution for each part of the data distribution:

Upper quartile (Q3): This is the value at where the box in the box plot ends at the edge of the box. From this point to the left, all data values that fall within the bracket make up 75% of the data.

Lower quartile (Q3): This is the value at where the box in the box plot starts at the edge of the box. From this point to the left, all data values that fall within the bracket make up 25% of the data.

Median: this is the middle value at the point where the line divides the box and data below this point make up 50% of the data.

The other five-number summary are the maximum and the minimum values that are represented by the whiskers.

On the box plot given, 66 is at the extreme whisker at the left. This means that the percentage of data that is roughly greater than 66 is 100%.

Learn more about the box plot on:

brainly.com/question/14277132

#SPJ1

7 0
1 year ago
1/4 DIVIDED BY 1/2 = ? <br> CHECK BY MULTIPLYING
Llana [10]

Answer:

1/2

Step-by-step explanation:

1/4÷1/2

1/4*2/1

2/4

1/2

Points to remember:if u change dividion sign into multiplication sign do it's reciprocal.

8 0
3 years ago
Read 2 more answers
I'LL GIVE 25 POINTS!!!
pickupchik [31]

Answer:

i cant see the photo its messy or is it just me

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Rita has already prepared 3 kilograms of dough and will continue preparing 1 kilogram of dough every hour. How much dough did Ri
Digiron [165]

Answer:

12

Step-by-step explanation:

9+3=12

hope it helps

btw I need one more brainliest to level up

6 0
3 years ago
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