Assuming that 1000 women working in a factory have the normal division of age with an arithmetic mean of 40 and a standard deviation of 10 years, find the number of people aged over 50. a) 528

Q: The masses of tablets of chocolates produced by a certain machine are found to be normally…

A: To estimate the number of tablets in a batch of 200 whose masses are greater than 145g or between…

Q: In Major League Baseball, the average fastball pitch is 90 miles per hour, μ = 90, with a standard…

A: Given, the average fast ball pitch is 90 miles i.e. µ=90. And has a standard deviation of 3 miles…

Q: please show work

A: Mean=100Standard deviation=15

Q: Assume the population mean (µ) is 8 seconds with a standard deviation (σ) of 2 seconds. a) How far…

A: The mean is 8 seconds and the standard deviation nis 2 seconds.

Q: The speed limit of a road is 65 miles per hour. The speed of a car on the highway follows a normal…

A: Note: Hi there! Thank you for posting the question. Unfortunately some portion of the question seems…

Q: 16.)Find the percent of the area under a normal curve between the mean and the given number of…

A: Since z-value for mean is 0. So the area under a normal curve between the mean and the given number…

Q: The average amount of rainfall in Puerto Rico last month was 3.5 inches, according to the National…

A: Given information Mean µ = 3.5 inches Standard deviation σ = 0.8 inches

Q: Which of the following is NOT a characteristic of a normal curve? A The total area under any normal…

A: Which of the following is not a characteristic of a normal curve :-

Q: The distribution of average speeds of the top 53 drivers in NASCAR is roughly symmetric, unimodal,…

A: (a) Draw the normal curve with the values from Z=–3 to Z=3 The below graph represents the normal…

Q: The standard deviation of a 1200 volume population is 90cm. Find out how many units the sample…

A:

Q: A distribution with a mean of 76 and a standard deviation of 12 is transformed into a standardized…

A: The following information is provided in the question μOld=76 σOld=12μNew=95σNew=7 Now, a. First…

Q: The standard deviation of the population of IQ score is standardized to be 85 points. Calculate  the…

A:

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

A:

Q: A livestock company reports that the mean weight of a group of young steers is 1300 pounds with a…

A: It is an important part of statistics. It is widely used.

Q: A store owner wants to know the true average age of his customers. He records the age (X) of six…

A: From the provided information, Sample size (n) = 6 Sum of the six ages (∑x) = 210 And Sxx = 428

Q: A research is conducted to investigate the prevalence of airborne bacteria in carpeted and…

A: The confidence interval formula to find out the ratio of two population variances is defined as…

Q: A study was done of 6 patients admitted to a hospital.   Their ages (x) and systolic blood pressure…

A: Given: n = 6 Formula Used: Standard error Se = S∑Xi-X2 Where, S = Sy2-b2Sx2n-1n-2 b =…

Q: Does the data follow standard normal? Suppose the data size is 100. Then, we know, in the interval…

A: Given that the data size is 100 and the numbers in the interval as Interval Frequency…

Q: Pv. Don't provide handwriting solution

A: Given:mean µ=70standard deviation σ=5number of students who took an intermediate level Statistic…

Q: 1. The volume of water in commercially supplied fresh drinking water containers is approximately…

A: a) Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: Consider a set of data that has mean u=72 and standard deviation a= 12 In a), and b) assume the…

A:

Q: The annual rainfall in a certain region is approximately normally distributed with mean = 41.3…

A:

Q: Provide an appropriate repose.Show work 1) In a normal distribution, approximately what percent of…

A: To find: what percent of data items fall within 2 standard deviation of the mean(in both…

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 33 beats…

A: Given that, (a) The difference between the pulse rate of 33 beats per minute and the mean pulse…

Q: The scores on a driver's test are normally distributed with a mean of 100. Find the score that is 3…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 28 X~N (100, 28)

Q: 1) The laser offset is known to have a normal distribution with population mean of 100 nm and…

A:

Q: The weights of 300 males were measured. The mean weight was 80kg and the standard deviation was…

A:

Q: Find the probability that the mean for 20 randomly selected distances is greater than 195.70 cm.

A: Given that.   X~N( μ , ?)   μ=197.5     , ?=8.9   Z-score =( x - μ )/?

Q: The heights of students are normally distributed with mean 154 cm and standard deviation 26 cm. For…

A: Answer: From the given data, Let X denote the heights of students Mean (μ) = 154 Standard deviation…

Q: 2. In an advertisement, a certain brand of shampoo is claiming that the use of this product will…

A:

Q: -1. The mean square between treatments (MSTF

A: We can see that we want to check 4 treatment means are significantly different or not.  Therefore…

Q: 7. Suppose the length of newborn babies in a community is normally distributed with an average of 50…

A: We have given that  Mean=mu=50 Standard deviation=sigma=3 X~Normal(mu=50,sigma=3)

Q: For SRSWOR (N,n), find the ratio estimator of population mean. Show that the estimator is biased

A: Given information: The population size is N. The sample size is n. The sample is selected using…

Q: Any quantity that is computed from a sample is called

A: Sample :  It is subset of population

Q: The length of time to discharge a certain Motolite car batteries are normally distributed. It is…

A: Given info: The length of time to discharge a certain Motolite car batteries are normally…

Q: It is known that the mean of blood pressure values in a population is 130mmHg, and the standard…

A:

Q: The mean score on a driving exam for a group of​ driver's education students is 6868 ​points, with a…

A: Interpretation: The percentage of x less than 58 is 75%.   Explanation:Step 1:If k value is 2, Then…

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.