A car hire firm has cars which it hires out day by day. The number of demands for a car on each day is distributed as a poison fashion with mean 1.5. Calculate the probability on which (i) neither car is used (ii) more than 2 cars are in used

Q: Imagine a soldier in a trench during an armed conflict. In the enemy camp, inside another trench, is…

A: P(sniper) = 0.001 P(regular) = 0.999 P(hit |sniper) = 0.87 P(hit | regular) = 0.18

Q: Before every​ flight, the pilot must verify that the total weight of the load is less than the…

A: X=164μ=179.8σ=37.7n=41 The Z-score is given by, Z=X-μσ/n

Q: A botanist wants to know if two different soils lead to different levels of evaporation in plants.…

A: In this case, Each of the plants is used in both soils, she can use a paired samples t-test to…

Q: One sample of n=10 scores has a mean of 8 and a second sample of n= 5 scores has a mean of 2. if the…

A:

Q: Determine if the class BMI is significantly higher than the cutoff for a healthy BMI which is 25.

A:

Q: Larry is a 62% free-throw shooter, that is to say that anytime Larry attempts a free-throw, there is…

A: Given data, p=62% =0.62 n=70   Mean=?

Q: College students and surfers Rex Robinson and Sandy Hudson collected data on the​ self-reported…

A: Given that :Long board :13,20,21,22,9,10,17,12,18,10,10,4,17,22,5,9,12,11,Short…

Q: Assume that blood pressure readings are normally distributed with u = 124 and o = 9. A researcher…

A: Consider X be the random variable representing the blood pressure readings. X follows normal…

Q: 14. Which of the following would NOT produce the mean of a variable in Column A (starting at row 2…

A: 14) Answer:- We know that, The mean of a variable in Column A (starting at row 2 and ending at row…

Q: i) Based on the output given, use these data to develop the equation of the regression model to…

A: from the above output  y =β0 + β1x1  simple regression where β0 is intercept β1 is the slope  where…

Q: If the data is weight, the z-score for someone who is overweight would be what?? if the data is…

A: Also known as standard score, z-scores are a way to compare two scores that may or may not be from…

Q: The owner of a chain of mini-markets has two stores, Store 1 and Store 2, in one city. She recently…

A: a)Consider   is the population mean value of the differences of the sales of stores 1 and 2.That is,…

Q: Find the weighted mean for a particular student's scores on three exams if the first one was worth…

A: The weighted mean can be calculated as: Weighted mean = Sum of (weightage x score) / Sum of…

Q: A paper company has about 50 paper mills distributed over 3 provinces. Each mill records specified…

A: From the given information, y is the predicted variable and x is the predictor variable. The general…

Q: • Agraduate student in psychology wanted to look into the influence of gender on the percelved…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: One sample has a mean of M = 10 and a second sample has a mean of M = 20. The two samples are…

A: Given: mean of one sample M = 10, mean of second sample M = 20. For part 1: To find the mean for the…

Q: The number of pair days off taken by eight employees at a local small business is compared to the…

A: Given Information :  The number of pair days off taken by eight employees at a local small business…

Q: What is the probability that the aircraft is overloaded?

A: Here Before every flight, the pilot must verify that the total weight of the load is less than the…

Q: The owner of a chain of mini-markets has two stores, Store 1 and Store 2, in one city. She recently…

A: Given:-                 n = 12                 d¯   = 23.8                sd = 83.4

Q: Assume that weights of men are normally distributed with a mean of 185.47 lb and a standard…

A:

Q: Before every flight, the pilot must verify that the total weight of the load is less than the…

A: Let X be the weights of men which follows normal distribution with mean 175.3 lb, and standard…

Q: Suppose you are conducting a paired t test to determine whether or not caffeine has an effect on…

A: d = B- A

Q: The number of pair days off taken by eight employees at a local small business is compared to the…

A: a. Null Hypothesis: H0: The average value is equal to 15 Alternative Hypothesis: H0: The average…

Q: A surplus store gives a scratch‑off ticket to 2000 customers as they leave with their groceries. Can…

A: The store gives a scratch-off ticket to 2000 customers as they leave with their groceries. The…

Q: The blue catfish (Ictalurus Furcatus) is the largest species of North Amercian catfish. The current…

A: Givenclaim isThe mean weight of the fish in this reservoir is greater than 40 pounds

Q: Data accumulated by the National Climatic Data Center shows that the average wind speed in miles per…

A:

Q: So far, Walter has scores of 18, 17, 19, and 21 points for the first four science quizzes. What does…

A: Walter scores of first four science quizzes is 18, 17, 19 and 21 points.

Q: The population mean will always be the same as the mean of all possible X that can be computed from…

A: Solution Ans is True

Q: Before every flight, the pilot must verify that the total weight of the load is less than the…

A:

Q: if a study determines the difference in average salary for subpopulations of people with blue eyes…

A: Given , a study determines the difference in average salary for sub populations of people with blue…

Q: In King County in the first half of 2013 (January to June) there were 3016 HIV-infected residents,…

A: Prevalence indicates the total number of infected persons in a population over a specific time…

Q: One sample has a mean of M=8 and a second samplehas a mean of M=16. The 2 samples are combined into…

A: Given data M1 = 8 M2 = 16 n1 = 3 n2 = 5