## Math Problem Statement

A certain drug is used to treat asthma. In a clinical trial of the drug,

2020

of

267267

treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than

1111%

of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a

0.050.05

significance level to complete parts (a) through (e) below.

1-PropZTest

propless than<0.110.11

zequals=negative 1.832705209−1.832705209

pequals=0.03342321110.0334232111

ModifyingAbove p with caretpequals=0.07490636700.0749063670

nequals=267267

Question content area bottom

Part 1

**a.** Is the test two-tailed, left-tailed, or right-tailed?

Right tailed test

Two-tailed test

Left-tailed test

## Solution

## Ask a new question for Free

### By Image

Drop file here or Click Here to upload

## Math Problem Analysis

### Mathematical Concepts

Hypothesis Testing

Normal Distribution Approximation

Proportion Tests

### Formulas

1-PropZTest formula: Z = (p̂ - p0) / sqrt(p0(1-p0)/n)

### Theorems

Normal Approximation to the Binomial Distribution

Hypothesis Testing for Proportions

### Suitable Grade Level

Grades 11-12

## Related Recommendation

Hypothesis Testing for Proportions: Calculate Test Statistic and P-value

Hypothesis Testing for Proportions: Example Problem and Solution

Understanding P-values in Hypothesis Testing: Left-Tailed Test Example

Understanding Hypothesis Testing: Test Statistic, P-Value, and Significance Level

Determining Critical Value for Hypothesis Testing with Significance Level α = 0.025