The number of people arriving for treatment at an emergency room can be modeled by a poisson process with a rate parameter of sx per hour (a) what is the probability that exactly four arrivals occur during a partioular hour? (round your answer to three decimal places) 0 134 (b) what is the probability that at least four people arlve during a particular hour? (round your aneswer to three decimal places) (c) how many people de you expect to amlve during a 45-min period? people

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;

let's fu(!

step-by-step explanation:

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!

the answer is c hope this