Given: normal distribution curve with mean = 182. standard…
Given: normal distribution curve with mean = 182. standard deviation = 18. i. Select the shaded graph that best represents P( X < 164 ) [ans1] Round the answers below to 2 decimal places if necessary. For example if your answer is 0.456, you should write it as 0.46. ii. P( X < 220 ) = [ans2] iii. P( X > 170 ) = [ans3] iv. P( 150 < X < 160 ) = [ans4] v. Given that the z-score =
Read Detailsi. Which statement below is FALSE regarding the possible v…
i. Which statement below is FALSE regarding the possible value of X as it relates to a probability distribution table: Type in the correct letter from the choices below: [ans1] a. It can be negative. b. It can be a decimal. c. All X values must add up to 100. d. You can have repeat values occur. ii. Which statement below is FALSE regarding the possible value of P(X) as it relates to a probability distribution table: Type in the correct letter from the choices below: [ans2] a. It can be negative. b. It can be a decimal. c. All P(X) values must add up to 1. d. You can have repeat values occur. For the probability distribution table shown below, calculate the expected value and standard deviation. iii. expected value = [ans3] iv. standard deviation = [ans4]
Read DetailsGiven binomial distribution: The probability that you will w…
Given binomial distribution: The probability that you will wake up each day before your alarm clock is 0.32. Choose the expression that best represents the answers to the scenarios below. a. Find the probability that you will wake up before your alarm MORE THAN 3 out of the next 7 days. [ans1] b. Find the probability that you will wake up before your alarm clock EXACTLY 3 out of the next 7 days. [ans2] c. Find the probability that you will wake up before your alarm clock on Mon, Tues, Wed but not on Thurs, Fri, Sat, Sun. [ans3] d. Find the probability that you WILL NOT wake up before your alarm clock AT MOST 3 out of the next 7 days. [ans4] e. Find the probability that you will wake up before your alarm clock LESS THAN 3 out of the next 7 days. [ans5] f. Find the probability that you will wake up before your alarm clock AT LEAST once out of the next 7 days. [ans6]
Read DetailsMovie theatres like AMC, Regal, and Cinemark estimate that 4…
Movie theatres like AMC, Regal, and Cinemark estimate that 40% of their customers buy popcorn when they see a movie at the theatre. Create a sampling distribution of n = 600. i. What type of data best describes the parameter of this problem? Type p for proportion, m for mean, sd for standard deviation. [ans1] ii. What type of data best describes the middle value of the sampling distribution? Type p for proportion, m for mean, sd for standard deviation. [ans2] Round your answers to 2 decimal places if necessary. iii. Find the value of the statistic for the sampling distribution. [ans3] iv. Find the standard error associated with the sampling distribution. [ans4] v. Find the probability that a random sample size of 600 would have between 39 and 41% of the customers saying they would buy popcorn at the movie theatre. [ans5] vi. Is it safe to assume that for a sample size of 600 people, you are pretty confident that less than 50% of the customers will be buying popcorn at the theatre. [ans6] Type y for yes or n for no.
Read DetailsRefer to the 4 scatterplots below to answer the first three…
Refer to the 4 scatterplots below to answer the first three questions. i. Which scatterplot has the strongest correlation between points? Type in a, b, c, or d [ans1] ii. How many of the given scatterplots show “no correlation” between the points? Type in 0, 1, 2, or 4. [ans2] iii. For scatterplot (c), the best estimate for the r value from the choices below is: [ans3] a. -0.70 b. 0.90 c. 0.10 d. 0.60 —————————————————————————————– Use a linear regression to model the scatterplot given by the x/y table below: iv. Describe the correlation between the given x & y values: Type in a, b, c, d, or e from the choices below: [ans4] a. weak positive b. weak negative c. strong positive d. strong negative e. no correlation v. Find the slope and y-intercept value for the linear regression equation: Round the slope to TWO DECIMAL places. Round the y-intercept to the nearest WHOLE number. slope = [ans5] y-intercept = [ans6] vi. Using the EXACT VALUES from the calculator to build your linear regression equation, the predicted value of 51 most likely occurs at an x value = [ans7] a. 78 b. 79 c. 80 d. 81 vii. The predicted line is most accurate with the scatterplot at x = Type in a, b, c, or d from the choices below: [ans8] a. 50 b. 55 c. 70 d. 82 e. 90
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