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gulaghasi [49]
3 years ago
10

Standardized tests for certain subjects, given to high school students, are scored on a scale of 1 to 5. Let X represent the sco

re on a randomly selected exam. The distribution of scores for one subject’s standardized test is given in the table.
A 2-column table with 5 rows. Column 1 is labeled score with entries 1, 2, 3, 4, 5. Column 2 is labeled Probability with entries 0.18, 0.20, 0.26, 0.21, 0.15.

What is the probability of earning a score of 3 or higher?

0.26
0.36
0.62
0.66
Mathematics
1 answer:
Black_prince [1.1K]3 years ago
8 0
It might be 0.36 or 0.66. Sorry if that doesn’t help
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23 and 24 please? Anyone?
Tasya [4]

Answer:

23. 92 points

24. 18.5 years old

Step-by-step explanation:

set up an equation

23. 79=chicago-13

add 13

chicago=79+13=92

24. 15.5=lou-3

loud=15.5+3=18.5

6 0
3 years ago
Descriptions of three studies are given. In each of the studies, the two populations of interest are students majoring in scienc
PilotLPTM [1.2K]

Answer:

Step-by-step explanation:

Independently selected samples measures scores on the same variable but for two different groups of cases while Paired-samples measures scores on two different variables but for the same group of cases.

In case study 1, the sample is independently selected; a random sample of 100 science majors and a random sample of 75 liberal arts majors are selected: two different group of cases and just one variable, to compare the mean number of hours.

In case study 2, the samples are paired, a random sample of science majors is selected. Each student in this sample is asked for two data values: a group of case but two different variables; how much money they spent on textbooks in the spring semester and how much money they spent on textbooks in the fall semester were measured.

In case study 3, the samples were independently selected. Two different group of cases; a random sample of science majors is selected. A separate random sample of the same size is selected from the population of liberal arts majors were measured for just one variable the mean amount of time spend in campus.

5 0
3 years ago
A fast-food restaurant offers 6 different burgers, 6 different side orders, 7 different flavor drinks, and 9 different flavors o
dangina [55]

Answer:

Total no of ways can a combo containing 2 burgers, 3 different sides, 2 different flavor drinks, and 3 ice cream flavors be made = 529,200

Step-by-step explanation:

Given -

A fast-food restaurant offers 6 different burgers, 6 different side orders, 7 different flavor drinks, and 9 different flavors of ice cream .

choose 2 burgers from 6 different burger = \binom{6}{2}

choose 3 different sides from  6 different side orders = \binom{6}{3}

choose 2 flavor drinks from 7 different flavor drinks = \binom{7}{2}

choose 3 ice cream from   9 different flavors of ice cream = \binom{9}{3}

Total no of ways can a combo containing 2 burgers, 3 different sides, 2 different flavor drinks, and 3 ice cream flavors be made=

= \binom{6}{2}\times\binom{6}{3}\times\binom{7}{2}\times\binom{9}{3}          ( Using combination )

= \frac{6!}{(2!)(4!)}\times\frac{6!}{(3!)(3!)}\times\frac{7!}{(2!)(5!)}\times\frac{9!}{(3!)(6!)}

= 15\times20\times21\times84

= 529,200

4 0
3 years ago
In how many ways can a member of a hiring committee select 3 of 12 job applicants for further consideration?
Andrew [12]

Answer: 220

Step-by-step explanation:

When we wanto to create a group of K elements for a set of N elements (where the order of the K elements does not matter, so we do not considerate the permutations of the K elements), the number of possible combinations is:

C = \frac{N!}{(N - K)!*K!}

Here N = 12 and K = 3

C = \frac{12!}{9!*3!} = \frac{12*11*10}{3*2} = 220

So there are 220 possible combinations

3 0
3 years ago
What are the numbers of pi
guapka [62]

Answer:

3.14159265358979323846264338 and so forth

Step-by-step explanation:

I hope this helps

4 0
3 years ago
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