MATHEMATICS COLLEGE

The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated by a normal distribution with a mean value of 145 sec and a standard deviation of 25 sec. The fastest 10% are to be given advanced training. What task times qualify individuals for such training? (Round the answer to one decimal place.)

Answers

Answer 1

Answer:

Answer:

A task time of 177.125s qualify individuals for such training.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = (X - \mu)/(\sigma)$

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

In this problem, we have that:

A distribution that can be approximated by a normal distribution with a mean value of 145 sec and a standard deviation of 25 sec, so $\mu = 145, \sigma = 25$ .

The fastest 10% are to be given advanced training. What task times qualify individuals for such training?

This is the value of X when Z has a pvalue of 0.90.

Z has a pvalue of 0.90 when it is between 1.28 and 1.29. So we want to find X when $Z = 1.285$ .

$Z = (X - \mu)/(\sigma)$

$1.285 = (X - 145)/(25)$

$X - 145 = 32.125$

$X = 177.125$

A task time of 177.125s qualify individuals for such training.

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Luis drew a rectangle on his paper that was 112 cm by 16 cm. What is the area and the perimeter of the rectangle that Luis drew on his paper?PLEASE HELP ME OUT!! THIS IS DUE TODAY!

Answers

Answer:

Area - 1,792 Perimeter-256

Step-by-step explanation:

Area

length x width 112 x 16 =1,792

Perimeter

length x2 width x2 then add answers together

112x2 +16x2 =256

Robert wants to try some new chocolate chip cookie recipes. His current recipe calls for three and a half cups of flour for every bag of chocolate chips. He wants to determine which recipes require more or less flour than his current recipe. Sort the items into the diagram below.

Answers

Final answer:

To find out which recipes use more or less flour than Robert's current recipe, compare the quantity of flour needed per bag of chocolate chips in the new recipes to the 3.5 cups of flour needed in his current recipe.

Explanation:

In response to Robert's request, we would compare the amount of flour used in his current recipe to that used in other recipes. Since Robert's present recipe demands 3.5 cups of flour for each bag of chocolate chips, we would then have a baseline to compare with other recipes.

For instance, if a new recipe requires 4 cups of flour for a bag of chocolate chips, it means this recipe takes more flour. Conversely, if the recipe takes 3 or 2.5 cups for the same amount of chocolate chips, it uses less flour.

Overall, the process involves measuring the amount of flour that each new recipe requires and comparing it to the 3.5 cups in Robert's current recipe.

Therefore, to find out which recipes use more or less flour than Robert's current recipe, compare the quantity of flour needed per bag of chocolate chips in the new recipes to the 3.5 cups of flour needed in his current recipe.

Learn more about Recipe Comparison here:

brainly.com/question/10732805

#SPJ3

Answer:

Step-by-step explanation:

so first u need to add all the numbers

-Bertha

AA
SSS
SAS
Not Similar

Answers

Answer:

vertically opposite angles and alternate pair

so by aa similarity they are similar

Peyton Manning threw for 1,126 yards in his first four games. At this rate, how many yards will he throw for in sixteen games?

Answers

The answer 4504 yards. You divide 1126 by 4 then multiply that answer by 16.

Need help...,.......

Answers

$\large\begin{array}{I} \mathtt{ ( √(9x^2))/( √(18y^2))= (3x)/( 3√(2)y)= (x)/( √(2)y)}= ( √(2)x)/(2y) \end{array}$

Answer is A

A. 3x /3ysqrtof2. Multiply numerator and denominator by sqrt of 2
Then you have 3xsqrt of 2 /. 6y reduce by 3 both numerator and denominator
You have x sqrt of 2 / 2y

21) Which is the correct reasoning to use when simplifying this expression?

−200 ÷ −25
A) The quotient of two even integers is always positive.
B) The product of two even integers is always positive.
C) The quotient of two negative integers is always negative.
D) The quotient of two negative integers is always positive.

Answers

D) The quotient of two negative integers is always positive.

THe correct answer is D. ex : 9×-3= -27
-27÷-3= 9

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