1. Suppose that scores on a knowledge test are normally distributed with a mean of 71 and a standard deviation

of 6.

a. Label the curve: Show the mean and the value at each standard deviation:

b. If Angelica scored a 76 on the test, what is her z-score? (Draw her score on the curve above and label)

c. What percent of students did Angelica score higher than?

How can you tell?

d. If 185 students took the test, how many students scored higher than Angelica?

Step-by-step explanation:

X represent the random variable scores of knowledge test and is given as follows;

X-N (m= 71, s= 6)

A. For this question we can see the distribution in the file attached has a bell shaped graph and symmetrical around 71

B. To calculate the z score, we use the following method

z = (X-m)÷s

z = (76-71)÷6

z= 0.833

C. The probability of P( X> 76) using the standard normal distribution table is P(Z> 0.833) = 1 - P(Z<0.833) = 0.202

D. The number of students that scored more than Angelica is calculated as follows

n = 185×0.202

n= 154.16

154 to 155 students scored higher than Angelica.

a. turk and mcalister

b. howard, mission, and market

c. yes. since streets end some do not cross yet are not parallel to others. example: mcalister and 5th

step-by-step explanation:

parallel lines are lines which do not intersect ever and look a lot like railroad tracks. turk, mcalister and golden gate are examples of these.

intersect are streets which cross each other and a car on one can reach the other. howard, mission, and market intersect with 6th.

skew lines are lines which neither intersect nor are parallel. these lines exist here because some streets end and never intersect another like mcalister and 5th.

answer: 323 is how many she has ☃☃⛄❄

step-by-step explanation: