The Mean Weight of Newborn Infants at a Community Hospital

question 203

Multiple Choice

The mean weight of newborn infants at a community hospital is 6.6 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. Does this sample support the original claim? What is the decision for a significant increase in the average birthrate at a 5% level of significance?

• A) Fail to reject the null hypothesis and conclude the mean is 6.6 lb.
• B) Reject the null hypothesis and conclude the mean is lower than 6.6 lb.
• C) Reject the null hypothesis and conclude the mean is greater than 6.6 lb.
• D) Cannot calculate because population standard deviation is unknown.
• E) None of these statements are true

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Definitions:

Retained Earnings Account

An equity account that represents the accumulated profits of a company that have not been distributed to shareholders as dividends.

Income Statement Account

An income statement account is a financial account that reflects income, expenses, gains, and losses over a period, used to calculate net income.

Stock Dividend

A distribution of additional shares of a company to its shareholders instead of paying cash dividends, often used to conserve cash while still rewarding investors.

Par Value

The nominal or face value of a bond, stock, or coupon as stated by the issuer, which often bears no relation to its market value.