The total energy needed during pregnancy is normally distributed, with mean of 2600kcal/day and a standard deviation of 50 kcal/day.  Describe the sampling distribution of the sample mean daily energy requirement for a random sample of 20 pregnant women.

Q: A record of the annual maximum wind velocities at a particular location gave the mean value as 79.5…

A: Given that the maximum wind velocities at a particular location has the mean value 79.5 and the…

Q: A normal-shaped distribution with mean of 40 and standard deviation of 8 is transformed into…

A: When the raw scores are transformed to z-scores the mean will be always equal to 0 and the standard…

Q: The weights of bags of cookies have a bell shaped distribution with a mean of 15 ounces and a…

A:

Q: The mean incubation time of fertilized eggs is 23 days. Suppose the incubation times are…

A: To compute the 11-th percentile means, we need to find the z-score associated with the respective…

Q: The distribution of grades in a final exam conforms to the normal distribution with an average of 60…

A:

Q: A soda machine dispenses soda into 11-ounce cups. Tests show that the actual amount of soda…

A: Concept: Here we shall use the formula, z=x-μσ where x is the raw score, μ is the mean and σ is…

Q: The weights of collected fruits are normally distributed, with a mean of 150 g and a standard…

A:

Q: The length of time of full-length movies is approximately normally distributed with a mean of 1.9…

A:

Q: The heights of the women are normally distributed with a mean of 64.4 inches and a standard…

A:

Q: The daily surface concentration of carbonyl sulfide on the Indian Ocean is normally distributed,…

A: Given: μ= 9.1 σ = 3.5 Let X denote the daily surface concentration of carbonyl sulfide on the Indian…

Q: The prices of all college textbooks follow a bell-shaped distribution with a mean of $180 and…

A:

Q: The head circumference of adult American females is normally distributed with a mean of 22.4 inches…

A:

Q: The length of an injection-molded plastic case that holds magnetic tape is normally distributed with…

A: Answer - Given,   X ~ N(μ, σ)               Where μ = 90.4    and   σ = 0.1            Find    P( X…

Q: The heights of male students are normally distributed with a mean of 170 cm and a standard deviation…

A: The heights of male students are normally distributed with a mean of 170 cm and a standard deviation…

Q: The average amount spent per customer at a restaurant on lunch is $15 with a standard deviation of…

A: Given information: Denote the random variable as X = Amount spent per customer. The mean and…

Q: A market research company employs a large number of typists to enter data into a computer. The time…

A: X follows a Normal distribution with mean = 100 and S.D = 10 Then z=(x-mean)/SD = (x-100)/10…

Q: The height (in meters) of CNU students follows a normal distribution with a mean of 1.512 m and a…

A:

Q: The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean 0.9…

A: We have, μ=0.9σ=0.15

Q: The weight of adobe bricks for construction is normally distributed with an average of 2 pounds and…

A: given: μ=2σ=0.5n=24

Q: The average waist size for teenage males is 29 inches with a standard deviation of 2 inches.  If…

A: Given that, The formula for calculating the z-score is,

Q: Find the proportion of their long distance calls that is between 4.0  minutes and 5.5 minutes?

A: Let X denote the lengths of the long distance calls. Given that X follows N(mean= 4.5, SD= 0.8) then…

Q: The amount of money spent on online foods by customers at an online restaurant follows a normal…

A:

Q: A record of the annual maximum wind velocities at a particular location gave the mean value as 79.5…

A: Given information: μ=79.5 m/hσ=41.2 m/h

Q: The total energy needed during pregnancy is normally distributed, with a mean of 2600 kcal/ day and…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: The mean inside diameter of washers produced by a machine is 0.403 cm and the standard deviation is…

A: Given, μ = 0.403σ = 0.005To find,P (X < 0.397 or X > 0.406) = ?

Q: The mean weight of 500 male students in a certain college is 151 Ibs. and the standard deviation is…

A:

Q: The pulse rates of adult men approach a normal distribution, with a mean of 80 bpm. (beats per…

A:

Q: The volume of water in commercially supplied fresh drinking water containers is approximately…

A:

Q: A farmer grows a particular type of apple which have normally distributed weights with a mean of 150…

A: Given, Mean = 150 Standard deviation = 20   The objective is to find the percentage of apples weigh…

Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…

A: Let , the random variable X be the amounts of nicotine in a certain brand of cigarette The random…

Q: The average waist size for teenage males is 29 inches with a standard deviation of 2 inches. If…

A: Given Data: Let X be the waist size for teenage male Meanμ=29 Standard deviationσ=2   X~ Normal (29,…

Q: The distribution of grades in a final exam conforms to the normal distribution with an average of 60…

A: Given information: μ=60σ=8 The proportion of students required to pass=300350=0.857142857≈0.8571

Q: The noise reduction processor of an HDTV receiver computes an average frame over every 25 frames…

A: Solution: Let X be the noise in the original images that reach the receiver. From the given…

Q: A consumer group wants to estimate the monthly electricity consumption of households in a district.…

A: Given Data: ME=15 Confidence level=0.95 SD=40

Q: The IQ of 1,000 incoming students at University of Bayabas is normally distributed with a mean of…

A: The IQ of 1000 incoming students at university is given normally distributed with mean 103 and…

Q: A soft drink machine is regulated so that the amount of drink dispensed is distributed with a…

A: Sample size = sample size is the number of completed responses your survey receives or (randomly…

Q: The average healing time of a certain type of incision is 288 ​hours, with a standard deviation of…

A:

Q: The average amount of calories from a hamburger serves in a restauranr is 220 per order with a…

A: Given that  μ = 220 , ? = 30 , n =20

Q: The time that it takes a driver to react to the brake lights on a decelerating vehicle is critical…

A:

Q: The compressive strength of samples of cement  can be modelled by a normal distribution with a  mean…

A: We have given that a random variable X i.e, Compressive strength. The compressive strength of…

Q: A representative sample of trees in a forest shows the trees to have a mean circumference of 19.7…

A: The sample of the data consists of the representative trees with mean of the circumference, μ=19.7…

Q: The admission committee of AUCA enrolls 76% of those who took the exam. If the scores follow a…

A:

Q: The mean inside diameter of washers produced by a machine is 0.403cm and the standard deviation is…

A: Given data,μ=0.403σ=0.005P(X<0.397 or X>0.406)=?

Q: A manufacturer of bolts has a quality control policy that requires it to destroy any bolts that are…

A: It is given that the mean and standard deviation are 7 and 0.05, respectively.

Q: The average cholesterol level for a random sample of 25 adult women is 263 units with a standard…

A: Given: Sample size, n=25 Sample mean,x¯=263Sample standard deviation,s=43Popoulation standard…

Q: The height (in meters) of CNU students follows a normal. distribution with a mean of 1.512 m and a…

A: Given,mean(μ)=1.512standard deviation(σ)=0.0741

Q: Assume that the pressure in NFL footballs is normally distributed with a mean of 13.00 PSI and a…

A: Standard normal distribution:The standard normal distribution is a special case of normal…

Q: A random sample of 29 employees of a large company have their systolic blood pressure checked.…

A: Note  Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: According to data from the U.S. Army the average foot length of women as normally distributed with a…

A: The random variable x represents foot lengths of women. x follows normal distribution with a mean of…

Q: The IQ of 1,000 incoming students at University of Bayabas is normally distributed with a mean of…

A: Given information: The IQ of 1,000 incoming students at University of Bayabas is normally…

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.