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# Suppose an Egyptian mummy is discovered in which the amount of​ carbon-14 present is only

Question Suppose an Egyptian mummy is discovered in which the amount of​ carbon-14 present is only about three​-fourths the amount found in living human beings. The amount of​ carbon-14 present in animal bones after t years is given by y=y0e-0.0001216t, where y0 is the amount of​ carbon-14 present in living human beings. About how long ago did the Egyptian​ die?About ____ yr ago the Egyptian had died?(Round to the nearest integer as needed.)I attached the problem below!

## The perimeter of a triangle is 67 in. The longest side is 15 in. longer

Question The perimeter of a triangle is 67 in. The longest side is 15 in. longer than the medium​ side, and the medium side is 5 in. more than the shortest side. Find the length of each side of the triangle.(a) The length of the longest side is ____ inches?(b) The length of the medium side is ____ inches?(c) The length of the shortest side is ____ inches?I attached the problem below!

## 1) Not everyone pays the same price for the same model of a car.

Question 1) Not everyone pays the same price for the same model of a car. The figure illustrates a normal distribution for the prices paid for a particular model of a new car. The mean is \$19,000 and the standard deviation is \$ 1000. Use the 68-95-99.7 Rule to find the percentage of buyers who paid less than \$18,000.The percentage of buyers who paid less than \$ 18, 000 is ? 2) Scores on the GRE​ (Graduate Record​ Examination) are normally distributed with a mean of 513 and a standard deviation of 115. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score below 168.The percentage of people taking the test who score below 168 is ?3) Scores on the GRE​ (Graduate Record​ Examination) are normally distributed with a mean of 523 and a standard deviation of 70. Use the 68-95-99.7 Rule to find the percentage of people taking the test who score above 733.The percentage of people taking the test who score above 733 is?4) Scores on a dental anxiety scale range from 0​ (no anxiety) to 20​ (extreme anxiety). The scores are normally distributed with a mean of 11 and a standard deviation of 4. Find the​ z-score for the given score on this dental anxiety scale.z12:

## 1) Scores on a dental anxiety scale range from 0​ (no anxiety) to

Question 1) Scores on a dental anxiety scale range from 0​ (no anxiety) to 20​ (extreme anxiety). The scores are normally distributed with a mean of 11 and a standard deviation of 4. Find the​ z-score for the given score on this dental anxiety scale.z6: z7: z15: 2) The average number of chocolate chips in a particular brand of chocolate chip chewy cookie is 19. The standard deviation is 2.6. Assuming that the number of chocolate chips per cookie is normally​ distributed, what percentage of cookies would have between 13.8 and 24.2​ chips?

## A pet store keeps track of the purchases of customers over a​ four-hour

Question A pet store keeps track of the purchases of customers over a​ four-hour period. The store manager classifies purchases as containing a dog​ product, a cat​ product, a fish​ product, or a product for a different kind of pet. The data to the right was recorded. Complete parts​ (a) through​ (d) below. -how many purchases were for a dog product only? -how many purchases were for a cat product only? -how many purchases were for a dog or fish product? -how many purchases were there in total?

## A Gallup poll of 1001 Americans age 18 and over conducted in May of

Question A Gallup poll of 1001 Americans age 18 and over conducted in May of 2013 found that 80% of the respondents “strongly agree” that K-12 schools should teach critical thinking to children.If the margin of error for this poll is 2.9%, then the 95% confidence interval for this statistic is from____ to_____ .

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