All categories

4 years ago

PLEASE HELP BRAINIEST ANSWER IS WORTH 20 POINTS

Mathematics

1 answer:

svetlana [45]4 years ago

5 0

Answer:

B. Final Exams.

Step-by-step explanation:

The IQR is the difference between the lower and upper quartiles of the data and is a measure of the spread of the data.

Mid Term Exam:

First find the Median

This is (95+92)/2 = 93.5.

The Lower quartile is the median of the bottom 5 values = 88.

The upper quartile is the median of the top 5 values = 100

So the IQR = 100 - 88 = 12.

Final Exam.

We find the IQR of the Final exam data in a similar way:

It comes to 93 - 78 = 15.

You might be interested in

How many terms are in the simplified expression -3x 2 + 2y 2 + 5xy - 2y + 5x 2 - 3y 2

Vilka [71]

there are 6 terms in the simplified expression

4 0

3 years ago

Read 2 more answers

kristen brought 2 candy bars for 1.29 each and a soda for 1.99 .she had to pay 0.38 in tax how much was her bill

Nadusha1986 [10]

The bill was $4.95 for the things they bought.

3 0

4 years ago

Read 2 more answers

:) help me pleaseeee asap

Shalnov [3]

Should be B because the slope is 2

7 0

3 years ago

Out of a group of 120 students that were surveyed about winter sports 28 said they ski 53 said they snowboard Sixteen of the stu

hjlf

Answer:

P ( snowboard I ski) = 0.5714

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Ski

Event B: Snowboard.

28 out of 120 students ski:

This means that $P(A) = \frac{28}{120} = 0.2333$

16 out of 120 do both:

This means that $P(A \cap B) = \frac{16}{120} = 0.1333$

P ( snowboard I ski)

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.1333}{0.2333} = 0.5714$

P ( snowboard I ski) = 0.5714

7 0

3 years ago

Read 2 more answers

a card is chosen at random from a deck of 52 cards it is then replaced and a second card is chosen what is the probability of ge

castortr0y [4]

There are 4 jacks and 4 eights so with replacement:

P(Jand8)=(1/13)^2=1/169

6 0

4 years ago

Read 2 more answers