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Artyom0805 [142]
3 years ago
10

A professor is grading the final exam. He notices that the mean test score is 61, and the standard deviation is 10. The test sco

res were normally distributed. if there were 450 students in the data sample, how many would have a test score between 61 and 71? *Round your answer to the nearest full value.
Mathematics
1 answer:
charle [14.2K]3 years ago
3 0

Answer:

66666699999

Step-by-step explanation:

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9<br> Check:<br> 6,350<br> - 2,460
bazaltina [42]

Answer:

3890

Step-by-step explanation:

5 0
3 years ago
5. Let A = (x, y), B = {1,2). Find the Cartesian products of A and B: A x B? (Hint: the result will be a set of pairs (a, b) whe
hichkok12 [17]

Answer: A x B = {(x,1), (x,2), (y,1), (y,2)}

Step-by-step explanation:

The Cartesian product of any two sets M and N is the set of all possible ordered pairs such that the elements of M are first values and the elements of N are the second values.

The Cartesian product of sets M and N is denoted by M × N.

For Example : M = {x,y} and N={a,b}

Then , M × N ={(x,a), (x,b), (y,a), (y,b)}

Given : Let A = {x, y}, B = {1,2}

Then , the Cartesian products of A and B will be :

A x B = {(x,1), (x,2), (y,1), (y,2)}

Hence, the Cartesian products of A and B = A x B = {(x,1), (x,2), (y,1), (y,2)}

8 0
3 years ago
You roll a number cube twenty times and it lands on a 3 five times. What is the
aniked [119]

Answer:

Hence, a fair dice has a probability of 16 to land on any predetermined number 1 through 6. Therefore, to land on 3 the probability is 16

Step-by-step explanation:

4 0
2 years ago
I need help with penut butter mnm
krok68 [10]

Answer:Peanut butter, Carmel, plain, peanut

Step-by-step explanation:

Each equality is divided by its own mass

3 0
3 years ago
On a multiple-choice test, a student has four possible choices for each question. The student receives 1 point for a correct ans
alexgriva [62]

Answer:

1 / 16

Step-by-step explanation:

Number of options = 4

Number of correct answers = 1

Number points gained for a correct answer = 1

Number of points lost for an incorrect answer = 1/4 = 0.25

Probability of choosing a correct option = 1/4

Probability of choosing an incorrect option = 3/4

x ____ 1 ______ - 1/4

P(x) __ 1/4 ______ 3/4

Expected gain or loss :

E(x) = Σx*p(x)

E(x) = (1 * 1/4) + (-1/4 * 3/4)

E(x) = 1/4 - 3/16

E(x) = (4 - 3) / 16

E(x) = 1 /16

A gain of 1/16

5 0
3 years ago
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