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Alinara [238K]
3 years ago
5

The data set on the right represents . Which formula should be used to calculate the variance? A teacher recorded all of his stu

dents’ grades on the final exam as: 62, 77, 78, 80, 82, 82, 83, 84, 85, 87, 89, 95 Consider the formulas: A: s squared = StartFraction (x 1 minus x overbar) squared + (x 2 minus x overbar) squared + ellipsis + (x n minus x overbar) squared Over n minus 1. B: s = StartRoot StartFraction (x 1 minus x overbar) squared + (x 2 minus x overbar) squared + ellipsis + (x n minus x overbar) squared Over n minus 1 EndFraction EndRoot. C: Sigma squared = StartFraction (x 1 minus mu) Squared + (x 2 minus mu) squared + ellipsis + (x N minus mu) squared Over N EndFraction. D: Sigma = StartRoot StartFraction (x 1 minus mu) Squared + (x 2 minus mu) squared + ellipsis + (x N minus mu) squared Over N EndFraction EndRoot
Mathematics
1 answer:
BARSIC [14]3 years ago
7 0

Answer:The data set on the right represents the population.

Step-by-step explanation:

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Debora [2.8K]

\frac{17}{60} and \frac{1}{4} are the experimental probabilities from the table.

Solution:

Total number of times spun the spinner = 60

Number of times getting 1 = 12

Number of times getting 2 = 17

Number of times getting 3 = 15

Number of times getting 4 = 16

<u>Experimental probabilities from the table:</u>

Probability of getting 1 = \frac{12}{60}=\frac{1}{5}

Probability of getting 2 = \frac{17}{60}

Probability of getting 3 = \frac{15}{60}=\frac{1}{4}

Probability of getting 4 = \frac{16}{60}=\frac{4}{15}

<u>To determine which are the experimental probabilities from the table:</u>

Option A: 15

This is not obtained above. So, it is not the experimental probability.

Option B: \frac{17}{60}

This is obtained in the probability of getting 2.

So, it is the experimental probability.

Option C: \frac{1}{4}

This is obtained in the probability of getting 3.

So, it is the experimental probability.

Option D: \frac{7}{15}

This is not obtained above. So, it is not the experimental probability.

Option E: \frac{12}{43}

This is not obtained above. So, it is not the experimental probability.

Hence \frac{17}{60} and \frac{1}{4} are the experimental probabilities from the table.

5 0
3 years ago
The histogram shows the number of minutes people were required to wait when they went to register for school. How many users are
UkoKoshka [18]

Answer:

4

Step-by-step explanation:

60 minutes = 1 hour → 120 minutes = 2 hours. The purple bar represents at least 121 minutes, which is greater than 2 hours.

7 0
3 years ago
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christina wants to buy a coach bag that normally costs $450. It goes on sale at a 15% discount. What is the amount of money bein
schepotkina [342]

Answer:

67.50

Step-by-step explanation:

100%-> 450

15%-> 67.50

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2 years ago
PLEASE HELP DUE TODAY!!! GIVING BRAINLIEST TO THE PEOPLE WHO ANSWER ALL!!! I JUST WANT TO FINISH THIS AND GO TO SLEEEEP!!!!!!!
guapka [62]

Answer:

1 = 144

2 = 80

3 = 192

4 =  1209.6 or 1209

5 = 375

Step-by-step explanation:

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2 years ago
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Answer:

1<x≤3

Step-by-step explanation:

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3 years ago
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