Solve the Problem

question 36

Multiple Choice

Solve the problem. Round the standard score to the nearest tenth before using the z-score tables. Express your answer as
a percent rounded to hundredths of a percent.
-A final exam in Math 160 has a mean of 73 with standard deviation 8.16. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed,
What percentage of sample means are greater than 78?

• A)0.26%
• B)99.87%
• C)0.13%
• D)99.74%

---

Definitions:

Plasma Membranes

The lipid bilayer that encloses the cytoplasm of a cell, controlling the movement of substances in and out of the cell.

Mycorrhizal Associations

A symbiotic relationship between the roots of plants and fungi, increasing the plant's water and nutrient absorption.

Sexual Reproduction

The process by which organisms create offspring by combining genetic material from two different parents, resulting in genetic diversity.

Ascomycota

A division of fungi characterized by the formation of spores in sac-like structures called asci.