. The price of a litre of gasoline follows a normal distribution with a mean of £1.20and a standard deviation of £0.20. Find the priceabove which 23% of gas stationsexceed (round your answer to the nearest 2 decimal places).A) 0.74B) 1.96C) 1.35D) 2.46M

Let X= The price of a litre of gasoline. The mean μ=1.20 Standard deviation σ=0.20 The random…

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A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Assume ACT and SAT scores have approximately bell-shaped distrubution with the folllowing statistics: ACT: μ= 21 σ= 5 SAT: μ= 1060 , σ= 195 1. create an interval that describes 95% of the SAT data centered about the mean. show work 2. use z-score to determine which is better an ACT score of 26 or a combines SAT score of 1220. Show work
Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Find the probability that a given score is less than - 0.51 and draw a sketch of the region. Sketch the region. Choose the correct graph below. O A. OB. OC. D. -0.51 -0.51 0.51 0.51 -0.51 The probability is (Round to four decimal places as needed.)
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Both sets of value have an average of 13. Is set A's standard deviation similar, larger, or about the same as set B's? set A: 1 2 3 23 24 25 ser B: 9 10 11 14 16 18
Length of snowboards in a boardshop are normally distributed with a mean of 150.4 cm and a standard deviation of 0.7 cm. The figure below shows the distribution of the length of snowboards in a boardshop. Calculate the shaded area under the curve. Express your answer in decimal form with at least two decimal place accuracy. 149.7 151.8 The Length of Snowboards in a Boardshop
The diameters of ball bearings produced in a manufacturing process can be described using a uniform distribution over the interval 8.5 to 10.5 millimeters. What is the mean diameter of ball bearings produced in this manufacturing process? A. 10 millimeters B. 10.5 millimeters C. 9.5 millimeters D. 9 millimeters
The blood pressure in millimeters was measured for a large sample of people. The average pressure is 140 mm, and the SD of the measurements is 20 mm. The histogram looks reasonably like a normal curv Use the normal curve to estimate the following percentages. Choose the answer that is closest to being correct. A 19.1% B 30.9% C 38.2% D 69.1% E 68.27% A The percentage of people with blood pressure between 130 and 150 mm. B The percentage of people with blood pressure between 140 and 150 mm. D The percentage of people with blood pressure over 150 mm.
suppose that peices of a gallon of mill at various stores in one town have amean of $3.75 with a stabdard deviation of $0.09 use chebyshev theourm what is the minimum percentage of stires that sell a gallon of milk for between $3.57 and $3.93 round your answer tk ine decimal place
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Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score between 1.83 and 1.83. Sketch the region. Choose the correct graph below. O A. -1.83 1.83 B. -1.83 *** 1.83 O C. -1.83 1.83 O D. -1.83 1.83
Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than - 1.59. Sketch the region. Choose the correct graph below. OA. -1.59 B. Q C. AAAA -1.59 1.59 ... The probability is (Round to four decimal places as needed.) S O D. 1,59 -1.59

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The price of a litre of gasoline follows a normal distribution with a mean of £1.20 and a standard deviation of £0.20. Find the price above which 23% of gas stations exceed (round your answer to the nearest 2 decimal places). A) 0.74 B) 1.96 C) 1.35 D) 2.46 CIN