1. An electronics store sold several types of computers last month. The frequency table below shows...

 

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1. An electronics store sold several types of computers last month. The frequency table below shows the different types and numbers sold. Use the data to fill in and complete the probability distribution column, then answer the following questions. Computer Type Probability Desktop (work) Frequency 22 Desktop (gaming) 4 Laptop (work) 44 Laptop (gaming) 4 Tablet 26 a. If the electronics store plans on running a sale next month and expects to sell 160 computers, predict how many will be laptop models for work. b. If the appliance store expects to sell 160 computers next month, predict how many will be tablet models. 2. Suppose a set of data is normally distributed with a mean of 50 and a standard deviation of 5. Use the normal distribution graph below to answer the following questions. The Normal Distribution 34.1 % 34.1 % 2.1% 2.1% 13.6% 13.6 % 0.1% 0.1 % -30 -20 -10 +10 +20 +30 68.2% 95.4 % 99.7% a. What percent of the data falls between 50 and 55? b. What percent of the data falls between 40 and 45? c. Suppose there are 600 numbers in the set of data. Use probability to predict how many numbers will fall between 40 and 50. d. Suppose there are 600 numbers in the set of data. Use probability to predict how many numbers will be less than 35. 3. A set of data is left skewed with Q = 24, Q2 = 50, and Q3 60. The maximum number in the data is 70. The minimum number is 12. Use this information about the data to answer the following questions. a. What is the percent of the data that falls between 24 and 60? b. What percent of the data falls between 60 and 70? c. Suppose there are 1,200 numbers in the data. Using probability, how many numbers are predicted to fall between 60 and 70? 1. An electronics store sold several types of computers last month. The frequency table below shows the different types and numbers sold. Use the data to fill in and complete the probability distribution column, then answer the following questions. Computer Type Probability Desktop (work) Frequency 22 Desktop (gaming) 4 Laptop (work) 44 Laptop (gaming) 4 Tablet 26 a. If the electronics store plans on running a sale next month and expects to sell 160 computers, predict how many will be laptop models for work. b. If the appliance store expects to sell 160 computers next month, predict how many will be tablet models. 2. Suppose a set of data is normally distributed with a mean of 50 and a standard deviation of 5. Use the normal distribution graph below to answer the following questions. The Normal Distribution 34.1 % 34.1 % 2.1% 2.1% 13.6% 13.6 % 0.1% 0.1 % -30 -20 -10 +10 +20 +30 68.2% 95.4 % 99.7% a. What percent of the data falls between 50 and 55? b. What percent of the data falls between 40 and 45? c. Suppose there are 600 numbers in the set of data. Use probability to predict how many numbers will fall between 40 and 50. d. Suppose there are 600 numbers in the set of data. Use probability to predict how many numbers will be less than 35. 3. A set of data is left skewed with Q = 24, Q2 = 50, and Q3 60. The maximum number in the data is 70. The minimum number is 12. Use this information about the data to answer the following questions. a. What is the percent of the data that falls between 24 and 60? b. What percent of the data falls between 60 and 70? c. Suppose there are 1,200 numbers in the data. Using probability, how many numbers are predicted to fall between 60 and 70?