Use the Following to Answer Questions

question 82

Multiple Choice

Use the following to answer questions :
The table below lists the observed frequencies for all four categories for an experiment.

-The null hypothesis for the goodness-of-fit test is that the proportion of all elements of the population that belong to each of the four categories is the same.The significance level is 1%.What is the critical value of chi-square?

• A)13.277
• B)11.345
• C)12.838
• D)14.860

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Definitions:

Sebum

An oily substance produced by sebaceous glands in the skin, which lubricates and waterproofs the skin and hair.

Epidermis

The outermost layer of the skin that provides a waterproof barrier and creates skin tone.

Oral Care

The practice of keeping the mouth, teeth, and gums clean and healthy to prevent disease, including regular brushing and dental check-ups.

Dental Visits

Appointments with a dentist for the examination, cleaning, and treatment of teeth and gum conditions to maintain oral health.