Using the empirical rule, identify the range of values around the mean that includes 95% of sales numbers
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C. The number of hot dogs sold by a street vendor each day during the same hourlong period is
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- The shelf life of a battery produced by one major company is known to be Normally distributed, with a mean life of 3.5 years and a standard deviation of 0.75 years. What is the upper quartile of battery shelf life? Use the fact that the middle 50% of the data falls within 0.67 standard deviations from the mean.The combined math and verbal scores for students taking a national standardized examination for college admission, is normally distributed with a mean of 800 and a standard deviation of 140. If a college requires a minimum score of 900 for admission, what percentage of student do not satisfy that requirement?The lengths of nails produced in a factory are normally distributed with a mean of 3.343.34 centimeters and a standard deviation of 0.070.07 centimeters. Find the two lengths that separate the top 3%3% and the bottom 3%3%.
- Find out mean deviation from mean by applying direct method from the following distribution: Values: 48, 50, 46, 44, 40, 42, 35, 30, 20, 15.In an experiment, college students were given either four quarters or à $1 bill and they could either keep the money or spend it on gum. The res the table. Complete parts (a) through (c) below. Purchased Gum Students Given Four Quarters Students Given a $1 Bill Kept the Money 14 25 18 31 a. Find the probability of randomly selecting a student who spent the money, given that the student was given four quarters.The amount of pretzels dispensed into a 24- ounce bag by the dispensing machine has been identifed as possessing a normal distribution with a mean of 24.5 ounces and a standard deviation of 0.2 ounce. What pretzel amount represents the 67th percentile for the bag weight distribution.
- Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.4 and a standard deviation of 1.51. Using the empirical rule, what percentage of American women have shoe sizes that are between 5.38 and 11.42?The number of orders received daily by an online vendor of used CDs is normally distributed with mean 260 and standard deviation 20. The company has to hire extra help or pay overtime on those days when the number of orders received is 310 or higher. What percentage of days will the company have to hire extra help or pay overtime? Click the icon to view the standard normal distribution table. The company will have to hire extra help or pay overtime on % of days.The combined SAT scores for the students at a local high school are normally distributed with a mean of 1469 and a standard deviation of 296. The local college includes a minimum score of 1824 in its admission requirements. What percentage of students from this school earn scores that satisfy the admission requirement?
- The combined SAT scores for the students at a local high school are normally distributed with a mean of 1478 and a standard deviation of 292. The local college includes a minimum score of 689.6 in its admission requirements.What percentage of students from this school earn scores that satisfy the admission requirement?Assume the hold time of callers to a cable company is normally distributed with a mean of 4.2 minutes and a standard deviation of 0.9 minute. Determine the percent of callers who are on hold between 2.7 minutes and 5.9 minutes.
