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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- Assume the hold time of callers to a cable company is normally distributed with a mean of 3.2 minutes and a standard deviation of 0.6minute. Determine the percent of callers who are on hold for more than 3.2 minutes.From checking Facebook while walking to class to posting photos on Instagram while eating in the Russell House - social media plays a significant role in the daily lives of college students. The average amount of time a college student spends on social media in the morning (6:00 am - 11:59 am) is normally distributed with a mean of 48 minutes per day and a standard deviation of 12 minutes per day. Suppose on a given morning a college student spends 85 minutes on social-media. Is this unusual?. OA. Not enough information OB. Yes OC. NoAssume the average amount of caffeine consumed daily by adults is normally distributed with a mean of 260 mg and a standard deviation of 48 mg. In a random sample of 600 adults, how many consume at least 320 mg of caffeine daily?
- 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.Suppose that water usages in American showers are normally distributed, with an average shower using 20 gallons, and a standard deviation of 3.2 gallons. Estimate the percentage of showers that used (a) between 13.6 and 26.4 gallons. % (b) more than 26.4 gallons. % (c) less than 10.4 gallons. % (d) between 16.8 and 29.6 gallons. %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%.
- 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.Assume that the average time to run a marathon in the population is 278 minutes with a standard deviation of 63 minutes. Use this information to answer the question In the population, what raw running time is 2.5 standard deviations below the mean? What is the percentile of this time?hello tutor, i hope you could help me, i have here a probability problem involving Standard normal probability distribution and it is required to be in excel. So i hope you will help me. thanksss
- 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 number of orders received daily by an online vendor of used CDs is normally distributed with mean 240 and standard deviation 16. The company has to hire extra help or pay overtime on those days when the number of orders received is 264 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.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.
