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3 years ago

A z-score of 1.0 corresponds to a value one standard deviation from the mean. True False

Mathematics

2 answers:

a_sh-v [17]3 years ago

7 0

Answer:

True.

Step-by-step explanation:

We have been given a statement and we are asked to determine whether our given statement is true or false.

Statement:

A z-score of 1.0 corresponds to a value one standard deviation from the mean.

We know that z-score of a data set represents how many standard deviation a data point is above or below mean.

Since the z-score of a data set is 1.0, so it represents that the data is 1 standard deviation above mean.

Therefore, our given statement is true.

lukranit [14]3 years ago

4 0

Answer:true is the correct answer

Step-by-step explanation:

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Find slope and y-intercept formed the graph if the linear equation <br>y=1/4x-8

RSB [31]

Answer:

not sure exactly what its asking but if its asking the slope and y-intercept of this equation is here.

Step-by-step explanation:

the slope is 1/4 while the y-intercept is -8 or (0,-8)

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2 years ago

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The weights of certain machine components are normally distributed with a mean of 8.04 g and a standard deviation of 0.08 g. Fin

NISA [10]

Answer:

The bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

Step-by-step explanation:

We are given that

Mean, $\mu=8.04 g$

Standard deviation, $\sigma=0.08g$

We have to find the two weights that separate the top 3% and the bottom 3%.

Let x be the weight of machine components

$P(Xx_2)=0.03$

$P(X$

=0.03

From z- table we get

$P(Z1.88)=0.03$

Therefore, we get

$\frac{x_1-8.04}{0.08}=-1.88$

$x_1-8.04=-1.88\times 0.08$

$x_1=-1.88\times 0.08+8.04$

$x_1=7.8896$

$\frac{x_2-8.04}{0.08}=1.88$

$x_2=1.88\times 0.08+8.04$

$x_2=8.1904$

Hence, the bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

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2 years ago

Dan takes an airplane to visit his parents. He pays the airline a total of $450. The cost of the ticket is $315. The airline als

vredina [299]

Answer:

Step-by-step explanation:

Start with the total amount Dan paid and subtract the part of the payment that is for the ticket.

450-315=135

Assuming that all of that $135 was for luggage fees and each pound over the limit costs $15, then the question is, how many times did Dan pay $15 until he'd paid the full $135 luggage fee.

So divide $135 by $15.

135/15=9

So his luggage weighted 59 pounds, which is 9 pounds over the limit.

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1 year ago

Heather has to solve this system of equations using elimination. What should be her first step?

charle [14.2K]

I don’t know what the equation is but when using elimination you should cancel out opposite numbers such as 4x and negative 4x

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2 years ago

Read 2 more answers

PLEASE PROVIDE THE ANSWERS FOR A B C AND D ASAP!!! THANK YOUU

Rus_ich [418]

A. It is a parallelogram so, the formula is just simple base × height; 16cm × 9cm = 144cm²

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2 years ago