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You are responsible for hiring one of two hygienists for a dental office. The first dental hygienist has 25 years of experience. Given her record, she is likely to satisfactorily service 16 patients per day. Her hourly wage would be approximately $16 per hour. The other hygienist is new to the industry. He is expected to satisfactorily service 10 patients per day at an hourly wage of $8. Which dental hygienist would be the better hire? Why?
Assume that the smiling time of eight-week old babies, in seconds, follows a uniform distribution between 0 and 23 seconds, inclusive. This means that any smiling time from 0 to and including 23 seconds is equally likely.
1) We are 99% confident that the proportion of patients surveyed that have experienced a reduction in symptoms is between 0.2112 and 0.6638. 2) We are certain that 99% of patients will be between 0.2112 and 0.6638. 3) We cannot determine the proper..
At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
Sun Microsystems has approximately 50% of the high-end Unix machines market with its closest competitor being IBM. Suppose that 15 firms were in the market to purchase a high-end Unix machine. Assume that these firms listened to sales pitches by a..
The null hypothesis is to be tested at 95% confidence. Determine the critical values for this test.
Create one table that calculates summary measures of the change in test scores and income variables across all 80 schools.
For what value of t will the null hypothesis not be rejected?
According to the Scranton Edison Company, utility-plant investment per employee was approximately $453,300; $492,400; $498,900; $531,900; $553,900;
Compute the score based on their appropriate class means and standard deviations:
Establish a 99% Confidence interval about the difference in the proportion of the town voters and county voters who favor the proposal.
There are 5,000,000 Adults 25+ in Mtown. An advertiser buys a schedule on Channel 45: 20 spots in early news with an average A25+ quarter hour audience of 150,000, 25 spots in daytime with an average A25+ quarter hour audience of 200,000, and 10 s..
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