IncorrectYour answer is incorrect.A sample of a radioactive material is studied in a lab. There are 741 gamma ray emissions over 130 seconds.Use the Poisson distribution to find the probability that 1 or fewer gamma rays are emitted in a given second.Do not round intermediate computations, and round your answer to three decimal places.(If necessary, consult a list of formulas.)0.054

Let X be the number of gamma rays emitted per second follow Poisson distribution with Rate of…

Answered: A sample of a radioactive material is…

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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The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of 10. Suppose that one individual is randomly chosen. Let X = percent of fat calories. (a) Find the z-score corresponding to 43 percent of fat calories, rounded to 3 decimal places. (b) Find the probability that the percent of fat calories a person consumes is more than 43. (c) Shade the area corresponding to this probability in the graph below. (Hint: The x-axis is the z- score. Use your z-score from part (a), rounded to one decimal place). Shade: Left of a value Click and drag the arrows to adjust the values. -3 -- 3. -1.5 (d) Find the maximum number for the lower quarter of percent of fat calories. Round your answer to 3 decimal places. (e) Sketch the graph and write the probability statement. 2.
A professor sees students during regular office hours. Time spent with students follows an exponential distribution with a mean of 10 minutes. Find the probability that a given student spends fewer than 20 minutes with the professor? O 0.9632 O 0.8647 0.3658 O 0.7582
Verify whether the given table represents a probability distribution. In those cases where a probability distribution is described, find the mean and standard deviation. NOTE: The Rounding Rule for the mean and standard deviation: They should be rounded to one more decimal place than occurs in the raw data. For a group of four students, the number y who takes the Calculus II class next semester is given by this table. y P(y) 0 0.5131 1 0.3139 2 0.0624 3 0.1102 4 0.2002 Probability distribution with μ=0.4 and σ=0.4 Probability distribution with μ=0.6 and σ=0.1 Probability distribution with μ=0.6 and σ=0.3 Probability distribution with μ=0.7 and σ=0.4
4c.) Draw the graphs. Round your final answers up to 6 decimal places, if applicable. Give the correct units.
The data represent the results for a test for a certain disease. Assume one individual from the group is randomly selected. Find the probability of getting someone who tested positive, given that he or she had the disease. The probability is approximately The individual actually had the disease Yes D No 126 11 Positive Negative (Round to three decimal places as needed.) 34 129
Find the probability P(not E) if P(E)= 0.38. The probability P(hot E) is (Simplify your answer.)
K Assume that adults have IQ scores that are normally distributed with a mean of μ = 105 and a standard deviation o=20. Find the probability that a randomly selected adult has an IQ between 89 and 121. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 89 and 121 is (Type an integer or decimal rounded to four decimal places as needed.)
Pl Assume that thermometer readings are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A thermometer is randomly selected and tested. For the case below, draw a sketch, and find the probability of the reading. (The given values are in Celsius degrees.) Between 0.50 and 2.00 Click to view page 1 of the table. Click to view page 2 of the table. Draw a sketch. Choose the correct graph below. OA. OB. О в. C. z-0.50 z-2.00 z-0.50 z-2.00 z-0.50 z-2.00 The probability of getting a reading between 0.50°C and 2.00°C is. Click to select your answer(s). atv 4 4. MacBook Air F10 F11 F9 F6 F7 F8 임미 F3 F5 F4 F2 F1 & %$4 4. #3 9- 6.
Calculate the probability from the z-table. a. ?(? > −0.45) b. ?( ? < 2.10) c. ?(0 < ? < 2.10) d. ?(−0.45 < ? < 2.10)
Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard deviation of 1.00°C. A thermometer is randomly selected and tested. Draw a sketch and find the temperature reading corresponding to P34, the 84th percentile. This is the temperature reading separating the bottom 84% from the top 16%. Click to view page 1 of the table. Click to view page 2 of the table. Which graph represents P ? Choose the correct graph below. 84 A. В. OC. D. Ay X The temperature for P84 is approximately (Round to two decimal places as needed.)
Σ B > 口 Question 1 In brand recognition study, 913 consumers knew of Gap, and 33 did not. Use these results to estimate the probability that a randomly selected consumer will recognize Gap. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. %3D = qojd Submit Question MacBook Air DD F6 08 F3 F5 F4 % $ 8. # 9 2 R M G H S > command
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