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Select one answer. 10 points A study was conducted to estimate $\mu$, the mean commute distance that all employed U.S. adults travel to work. Suppose a random sample of 49 employed U.S. adults gives a mean commute distance of 22 miles and that from prior studies, the population standard deviation is assumed to be $\sigma = 8.4$ miles. Based on this information, what would be the point estimate for $\mu$? A. 49 B. 8.4 C. 22 D. 1.2

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Which statement is true about tariffs? Multiple Choice Supporters of protective tariffs say the tariffs insulate the world economy from entering into trade wars. Countries are not allowed to levy tariffs for political reasons. Protective tariffs allow more expensive domestic goods to compete with foreign ones. Protective tariffs force domestic and foreign products to be sold for the exact same price.

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Single adults: According to a Pew Research Center analysis of census data, in 2012, 20% of American adults ages 25 and older had never been married. Is the percentage higher for American men compared to all American adults? Suppose that we select a random sample of 50 male adults. H0: p=20% Ha: p<20% Suppose that 26% of our sample of 50 men had never been married. Note: The conditions are met for use of a normal model since we expect about 13 of the 50 sample (26% of 50) had never been married while 37 had been married. Both expected counts are at least 10. Find the Z-score, the standard error and use the standard normal probability calculator to calculate the p-value. Which value is closest to the calculated p-value. 14.5% 16% 10% 3%

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An electron is moving with a constant velocity vi when it passes through two sets of capacitor plates

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Since 1970, there has been a rapid decrease in mortality from heart disease. What has been the main contributor to this trend? (A) Improvements in medical technology, such as coronary bypass surgery, coronary care units, and angioplasty. B Development of new treatment techniques. C Prevention (including new drugs to control hypertension and high cholesterol) and changes in lifestyle (such as smoking cessation, exercise, and diet). (D) Increased insurance coverage

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Scientists studying amphibian extinctions have determined that the background extinction rate for amphibian species was 0.02, or 6 species, every 300 years. However, in the past 400 years, 80 amphibian species have gone extinct. Approximately how much faster has the rate of amphibian extinctions been in the past 400 years than the background extinction rate? 20 times faster 2 times faster 100 times faster 10 times faster

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51. Peter, a man with dementia, is agitated and throwing objects around the recreation room and against the wall. From the actions below, choose the least restrictive and most appropriate response. a) Move Peter to his room and lock the door until he calms down b) Remove others and yourself from harm's way c) Grab his arms to prevent him from picking up another object to throw d) Yell at him to stop before he hurts someone e) Remove all the objects from his reach

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5. Complete the following triangle. 15 39° 6 Complete the following triangle. 52° 20 7. A cell tower 1000 feet from you creates an angle of elevation of 4.8°. How tall is the cell tower? 8. A drone uses air to ground radar with a transmitter fixed to the ground to determine and relay its altitude. If the signal indicates that the drone is 60 feet from the ground transmitter and has an angle of declination from the horizontal to the transmitter of 55°, what is the altitude of the drone?

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1. Describe the allowance method of estimating bad debts expense on accounts receivable. How does it differ from estimating bad debts (i.e., uncollectible) on sales and accounts receivable? 2. What is considered in computing the cost of plant assets? How do we distinguish between revenue versus capital expenditures? 3. How do we calculate depreciation under the straight-line, units-of-production, and declining balance methods? How should we account for the disposal of an asset by selling or discarding it? In other words, how is the asset removed from the books? Specifically, what accounts should be included in the journal entry to record the disposition of the asset?

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A manufacturer of battery claims that the life of his batteries is approximately normally distributed with a mean life of 4 years and a standard deviation equal to one (1) year. What is the probability that the battery last more than five (5) years

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robert g.