The number of custmers who enter HSBC bank in an hour follows a poisson distribution, and suppose that P(X=0)3D0.15. Determine the mean and variance of X. mean=variance =1.997 mean = variance =1.897 mean=1.897 and variance =1.377 None

The number of custmers who enter HSBC bank in an hour follows a poisson distribution, and suppose that P(X=0)3D0.15. Determine the mean and variance of X. mean=variance =1.997 mean = variance =1.897 mean=1.897 and variance =1.377 None

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...

See similar textbooks

Similar questions

A group of adult males has foot lengths with a mean of 26.79 cm and a standard deviation of 1.27 cm. Use the range rule of thumb for identifying significant identify the limits separating values that are significantly low or significantly highIs the adult male foot length of 29.7 cm significantly low or significantly highExplain A random sample of 10 subjects have weights with a standard deviation of 14.0120 kgWhat is the variance of their weights? Be sure to include the appropriate u with the result The variance of the sample data is
Suppose we compute a correlation coefficient between two variable of r= 0. Which of the following must be true. O a. The correlation conditions have not been met O b. There is an outlier present in the scatterplot O c. There is no linear relationship between the two variables O d. There is no relationship at all between the two variables A Click Submit to complete this assessment. A Stat100_Practice..pdf Writing Prompt 3.docx Online Syllabus J....pdf 3 Bios357Schedul...pd ips-D056AE4A- Ips-53E329A5-0A IMG_S E23F-45...p4.movE6-4E6...mp4.mov OCT 」國TO 22 6. 20 F3 F1 O00 F2 F4 F5
Birth weight at a local hospital for the past year had a normal distribution with a mean of 106 ounces and a variance of 36 ounces2. If the middle 50% of the birth weights are considered to have a normal birth weight then what is the birthweight that defines a high birthweight baby (above normal)?
There are four numbers in a data set. They are 5, 3, 7, and 11. a) What is the ∑∑ x2x2 b) What is the (∑x)2(∑x)2 c) The formula for the population variance, σ2σ2 is ∑x2−(∑x)2nn∑x2-(∑x)2nn Use parts a and b to help calculate the population variance. d. Now get the population standard deviation.
A random sample of 10 subjects have weights with a standard deviation of 11.9848 kg . What is the variance of their weights ? Be sure to include the appropriate units with the result .
The mean age of 31 slot mechanic player is 51.3 years, and the standard deviation is 6.8 years.the mean age of a different sample of 35 roulette player is 54.8 year and standard deviation is 3.2 years. Can it be concluded at alpha = 0.01 that the mean age of slot machine players is less than those players roulette? Assume the variance are equal Step 1= Step 2= Step 3= Step 4=
A researcher found a significant correlation of .12 between gender (coded as 0 = ‘male’ and 1 = ‘female’) and number of friends at university. If the assigned values of gender were changed to 1 = ‘female’ and 2 = ‘male’, how would this affect the correlation? The strength of the relationship would become weaker The amount of variance explained by the relationship would increase It would become nonsignificantThe sign would change to become negative A researcher is trying to predict anxiety (measured on a 7-point scale) from exposure to stress (operationalised as the number of stressful life events participants can recall in the last week). She has found a correlation coefficient of r = .54 between anxiety and stress, with a standard deviation of 4.45 for anxiety and a variance of 17.21 for stress. What other information is needed to calculate b? The sums of squares of stressThe sums of products of anxiety and stress The covariance of anxiety and stressNo other information is…
Suppose X ~ N(3, 1.2). What value of x is two standard deviations to the right of the mean?
Assume that weights of adult females are normally distributed with a mean of 77 kg and a standard deviation of 22 kg. What percentage of individual adult females have weights between 71 kg and 83 kg? If samples of 100 adult females are randomly selected and the mean weight is computed for each sample, what percentage of the sample means are between 71 kg and 83 kg?
The life of light bulbs is distributed normaly, The variance of the lifetime is 900 and the mean lifetime of a bulb is 550 hours. Find the probablty of abulb lasting forat least 583 hours. Round your anvwer to four decimal places