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3 years ago

If you roll a six sided die six times What is the best prediction possible for the number of times you will roll an even number?

Mathematics

1 answer:

spin [16.1K]3 years ago

4 0

Answer:

chance is 50 percent or 1/2 so 3 times

Step-by-step explanation:

The die" has 6 sides with 3 odd numbers and 3 even numbers. If rolled 6 times, the chance would be 50 percent to roll an even number.

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Suppose the scores of students on a Statistics course are Normally distributed with a mean of 563 and a standard deviation of 37

ololo11 [35]

Answer:

47.72% of students scored between 563 and 637 on the exam .

Step-by-step explanation:

The percentage of the students scored between 563 and 637 on the exam

= The percentage of the students scored lower than 637 on the exam -

the percentage of the students scored lower than 563 on the exam.

Since 563 is the mean score of students on the Statistics course, 50% of students scored lower than 563. that is P(x<563)=0.5

P(x<637)=P(z<z*) where z* is the z-statistic of the score 637.

z score can be calculated using the formula

z*= $\frac{X-M}{s}$ where

X =637

M is the mean score (563)

s is the standard deviation of the score distribution (37)

Then z*= $\frac{637-563}{37}$ =2

P(z<2)=0.9772, which means that 97.72% of students scored lower than 637 on the exam.

As a Result, 97.72%-50%=47.72% of students scored between 563 and 637 on the exam

5 0

3 years ago

dirk sold 7 more than 2 times as many gym memberships this month than last month. the month he sold 43 memberships. how many mem

jenyasd209 [6]

Answer:

Step-by-step explanation:

x = last month

y = this month

y = 2x + 7

y = 43

43 = 2x + 7

43 - 7 = 2x

36 = 2x

36/2 = x

18 = x <== he sold 18 gym memberships last month

8 0

3 years ago

A survey asks adults to report their marital status. Suppose that in the city which the survey is conducted, 51% of adults are m

saul85 [17]

Answer: they all are different

Step-by-step explanation:

6 0

3 years ago

if the total angle of a triangle is 180 A- 43 1/2 B-5x C-26.5 and the started value is 20 what is X?

ValentinkaMS [17]

Answer:

x= 20.05 degree

180= 43.25+36.50+5x

180= 79.75+5x

5x=180-79.75

5x=100.25

x=20.25

ANGLE B= 100.25

3 0

3 years ago

Two lines intersect in more than one point.

statuscvo [17]

That would be false because parallel lines don't intersect. But i can if one is straight and the other is Curved

7 0

3 years ago