# Lesson 4Wow, That’s Weird!Practice Understanding

The data shown is the data from Mrs. Hernández’s class. Students needed to score or better to pass the test.

1st hour $72$, $83$, $56$, $63$, $89$, $92$, $92$, $67$, $88$, $84$, $67$, $97$, $96$, $100$, $84$, $82$ $80$, $83$, $81$, $81$, $67$, $90$, $70$, $71$, $72$, $77$, $81$, $85$, $86$, $77$, $74$, $51$ $51$, $45$, $67$, $83$, $99$, $100$, $94$, $52$, $48$, $46$, $100$, $59$, $65$, $56$, $72$, $63$

### 1.

Make a two-way frequency table showing how many students passed the test and how many failed each class.

1st

2nd

3rd

Total

Passed

Failed

Total

### 2.

What percent of students passed Mrs. Hernández’s test in each class? What is the total percent of all classes that passed?

1st hour:

2nd hour:

3rd hour:

Overall:

### 3.

Combine the data from all three classes to create a histogram using technology.

#### b.

What features of the normal curve does your histogram have?

### 4.

If Mrs. Hernández was going to predict her total pass rate using only hour, would she make an accurate prediction? Explain why or why not.

## Set

Five track athletes are in the running for the Athletic Performance of the Year award. A panel of coaches is trying to decide which athlete is the most deserving to win the award. Rank each athlete below by the given information. Assume all distributions follow a normal curve.

### 5.

Javier threw the javelin . The average javelin throw is . with a standard deviation of .

### 6.

Payton ran a time of . The average time was , with a standard deviation of .

### 7.

Alex ran a time in the hurdles. The average time was with a standard deviation of .

### 8.

Florence ran a time of . The average time was with a standard deviation of .

### 9.

Gabrielle threw the discus . The average throw was . with a standard deviation of .

## Go

Solve each equation for by applying properties of exponents and logarithms.