3 years ago

Lucille has a collection of more than 500 songs on her phone that have a mean duration of 215 seconds

Mathematics

1 answer:

Elena-2011 [213]3 years ago

8 0

Answer:

Step-by-step explanation:

The sample mean is given by dividing the standard deviation by the squareroot of SRS

Given standard deviation of 35 and SRS of 49, we know that the squareroot of 49 is 7 ie √49=7

By substituting the given values we can obtain the sample mean as follows.

sample mean=35/√49=35/7=5

The sample mean for the given question is hence 5

You might be interested in

The sum of two Integers is at most - 57 one integer is 33 . What is the other integer

Cloud [144]

Answer: The other integer is -90

Step-by-step explanation:

This is because since addition and subtraction has an inverse relationship. We will do -57 - 33 which is equal to -90. You can check your answer by adding 33 to -90 which is -57.

4 0

3 years ago

If the man has 20 dollars in his bank account and spends 2 dollars a day on coffee. How much money will he have in his account a

musickatia [10]

HEs going to have 14 dollars left
2x3=6
20-6=14

7 0

3 years ago

Which expression is equivalent to 4^4 ⋅ 4^−9?

melomori [17]

4^4 ⋅ 4^−9 = 4^(4-9)
= 4^-5
1 / (4^5)

Answer: fraction 1 over 4 to the power 5

7 0

3 years ago

The measure of angle ABD is 105º. The measure of angle ABC is 75º.

MakcuM [25]

If we know that the WHOLE angle added is 105 and only part is 75 you need to subtract the whole angle and subtract from part of the whole angle.

105-75=30. You get 30 And that’s you answer!

Picture to help with your understanding.

5 0

3 years ago

Please see all the screenshots. I have included multiply problems in this one question.

kakasveta [241]

Answer:

so basacilly the answer to all of the question is a

Step-by-step explanation: you welcome!

3 0

3 years ago