Assume the average amount of caffeine consumed daily by adults is normally distributed with a mean of 260 mg and a standard deviation of 48 mg. In a random sample of 600 ​adults, how many consume at least 320 mg of caffeine​ daily?

Q: The number of ants in a group is normally distributed with a mean of 67.0 and a standard deviation…

A: Let X be the random variable for the number of ants in a group. Given that, X~N(μ=67.0, σ=83.64)…

Q: Find the time it takes the fastest 24.2% of the college students to find a parking spot in the…

A: The length of time it takes college students to find a parking spot in the library parking lot…

Q: Suppose the heights of 10-year-old boys in the US vary according to a normal distribution with a…

A: The objective of this question is to find the percentile of a boy with a height of 140 cm given that…

Q: The number of chocolate chips in an​ 18-ounce bag of chocolate chip cookies is approximately…

A:

Q: The cholesterol levels of young women aged 20 to 34 have an approximate Normal distribution with…

A: Given: μ=185σ=40middle 68% of the choesterol levels would be between ?

Q: The speeds of all cars on the tollway was found to be normally distributed with a mean of 63 miles…

A: It is given that that µ=63 mile per hour. Obtain the standard deviation of the speeds of all cars:

Q: A particular fruit's weights are normally distributed, with a mean of 486 grams and a standard…

A:

Q: Women's heart beats per minute  are normally distributed with a mean of 72bpm and a std. dev. of…

A: We have to find the percent of women who would have heartbeats between 48bpm and 96bpm.

Q: The mean and standard deviation of hemoglobin level of 23 vibrant students and 21 school children…

A: We have to test claim.

Q: Steel rods are manufactured with a mean length of 25 centimeters (cm). Because of the variability in…

A: Given, Steel rod length are normally distributed with mean 25 cm and standard deviation 0.07.

Q: Steel rods are manufactured with a mean length of 27 centimeter​ (cm). Because of variability in the…

A: Given,mean(μ)=27standard deviation(σ)=0.06

Q: oby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A:

Q: The mean gas mileage for a hybrid car is 57 miles per gallon. Suppose that the gasoline mileage is…

A:

Q: he mean height of all adult American males is 69 inches (5 ft 9 in). A researcher wonders if young…

A: a) The hypothesized mean is 69 inches.

Q: According to the Carnegie unit system, the recommended number of hours students should study per…

A: State the hypotheses. That is, there is no evidence to conclude that the statistics students' study…

Q: A particular fruit's weights are normally distributed, with a mean of 305 grams and a standard…

A: Given: Formula: Let "X" be the weight of fruits in grams.

Q: Assume that the average length of some wire is 52 inches with a standard deviation of 6.5 inches. At…

A: Given: The average length of the wire, μ=52 Standard deviation, σ=6.5 We need to determine at most…

Q: What proportion of skiers will finish the race in exactly one minute?

A: The tume it takes for downhill skiers to finish a race follows a Normal distribution with a mean of…

Q: If an espresso machine out-pour is normally distributed with the mean of 0.9 ounces and standard…

A: Let  X be the random variable from normal distribution with mean (μ) = 0.9 and standard deviation…

Q: A particular fruit's weights are normally distributed, with a mean of 659 grams and a standard…

A: From the provided information, Mean (µ) = 659 grams Standard deviation (σ) = 7 grams Let X be a…

Q: The lengths of individual fish in a pond have a non-Normal distribution with a mean of 18.6 cm and a…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 230 grams and a standard…

A: The provided information is:

Q: The cost of repairs for a fleet of motorcycles follows a normal distribution, with a monthly average…

A: Given Information: Mean value (u) = $ 1280  Standard deviation (s) = $ 420

Q: A particular fruit's weights are normally distributed, with a mean of 621 grams and a standard…

A: It is given that the fruits weights follow normal distribution with mean 621 and standard deviation…

Q: Find the standard error. Answer 2.8 O 16.6 O 1.96 O 0.4733 O 15.67<μ <17.53

A: Standard error=Standard deviation/sqrt(sample size)

Q: A candy store sells about 8 million pieces of candy per day with a standard deviation of 300,000…

A: Given : Let X : Number candy that they sell in a given day           μ = 8 million i.e   Mean (μ) =…

Q: The mean gas mileage for cars driven by the students at Chillville High School is 28.0 miles per…

A:

Q: The cholesterol level of group of young women at a university are normally distributed, with a mean…

A: a) From the given information, the value of mean μ=185 and standard deviation is σ=39. Obtain…

Q: A study conducted on the cost of meals spent by employees per day. The mean cost of meals is…

A: Solution

Q: A particular fruit's weights are normally distributed, with a mean of 464 grams and a standard…

A: Let "x" be the weight of the fruit in grams. Sketch the normal curve and shade the area of 0.18…

Q: According to the National Vital Statistics, full-term baby’s birth weights are approximately normal…

A: The objective of this question is to find out the number of full-term babies born at a hospital in…

Q: A particular fruit’s weights are normally distributed, with a mean of 712 grams and a standard…

A: Given,mean(μ)=712  gramsstandard deviation(σ)=28  grams

Q: All the houses in Stanton county have a mean size of 1650 square feet with a standard deviation of…

A:

Q: A quick survey of peanut butter prices had standard deviation and mean of $0.26 and $3.68,…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 620 grams and a standard…

A: Probability distributions are of two types, discrete and continuous distributions. Normal…

Q: Cholesterol levels for women aged 20 to 34 follow an approximately normal distribution with mean 185…

A: Given ,Let , random variable X be the cholesterol levels for women aged 20 to 34 The random variable…

Q: The lengths of a large stock of titanium rods follow a normal distribution with a mean (u) of 440 mm…

A: Given that, The lengths of a large stock of titanium rods follow a normal distribution with a mean…

Q: A taxicab company in New York City analyzed the daily number of miles driven by each of its drivers.…

A: It is given that the number of miles driven is normally distributed with mean 200 miles and standard…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.