To estimate population mean, it is better to use point estimate rather than interval estimate ! Select one: True False

Q: It is assumed that a production process may produce some defective items. It is found that 12 items…

A: It is given that, the number of defectives out of 100 is 12.

Q: For the data set (−2,−1),(3,0),(5,4),(9,6),(9,12) find interval estimates (at a 95.2% significance…

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Q: The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to…

A: Solution

Q: A researcher wishes to​ estimate, with 95​% ​confidence, the population proportion of adults who…

A: (a) The estimate must be accurate within 4​% of the true proportion, 95% confidence and no…

Q: A summary measure that is computed to describe a characteristic of an entire population is called?

A: Statistic  - To describe a characteristic of  a sample Parameter -  To describe a characteristic of…

Q: There are 3 kinds of estimation approaches

A: There are more than 3 kinds of estimation approaches like as  Maximum likelihood Method ,  Method of…

Q: Explain briefly what is meant by the terms;  ‘point estimate’  ‘interval estimate’ Why do…

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Q: The average verbal SAT score for the entire class of entering freshmen is 530. However, if you…

A: given  The average verbal SAT score for the entire class of entering freshmen is 530. However, if…

Q: Differentiate between point and interval estimation with the help of examples. What impact…

A: Estimation is the procedure that is used to estimate the population parameters like mean and…

Q: Confidence intervals can only be computed for the mean?

A: A confidence interval is the interval that estimates the unknown population parameters. It gives the…

Q: What happens to the proportion of intervals that include the population proportion as the sample…

A: The formula for the confidence interval of population proportion can be written as: Here n is the…

Q: . For the data set (-1, –2), (1, 2), (5, 6), (7, 7), (9, 12), find interval estimates (at a 96%…

A: Given: X Y -1 -2 1 2 5 6 7 7 9 12

Q: Suppose a certain Statistics instructor wants to estimate the proportion of students who enjoy…

A: Given datamargin of error=0.03

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A: Margin of error(E), E=z×p×qn From the above E, find n, n=zE2×p×q Here, E=0.04 There is no…

Q: What is A Basic Deficiency for point estimate?

A: Point estimate: Point estimate is the singles value for the population parameter, which is obtained…

Q: Do I have to take many samples from my population to create a sampling distribution of the mean in…

A: Basics of sampling distribution of mean:The sampling distribution of the sample mean is essentially…

Q: . Refers to any measurable quantity calculated from the sample.

A: A statistic Refers to any measurable quantity calculated from the sample.

Q: A random sample of 60 students in the business statistics course answered a survey on the average…

A: From the given data: Mid-point=Upper clas limit +Lower class limit2 Classes Mid-point (x)…

Q: A random sample of 260 workers in a high rise office building revealed that 30% were very satisfied…

A: Let the proportion of workers who are satisfied with the quality of work be p^ p^ = 0.30 (point…

Q: What assumption regarding the population is necessary for making an interval estimate for the…

A: It is assumed that the population follows normal distribution with known population variance.

Q: 61 randomly selected lightbulbs were tested in a laboratory, 50 lasted more than 500 hours. Find a…

A: Introduction: A point estimate of a population parameter of interest may be defined as a single…

Q: The IRS is interested in estimating the total number of tax accounts who has their own tax returns…

A: A random sample of 100 returns showed that 15 were audited; n=100 x=15 α=0.95

Q: Please explain, in basic terms, how the Central Limit Theorem helps me obtain a likely value of the…

A: Central limit theorem:Central limit theorem is defined as the sampling distribution of any…

Q: If the mean is lower than the median. Describe the distribution.

A: Mean is the average of the set of observations and median is middle most value of the observations.

Q: The best point estimate of population mean is?

A: Best Point estimation requires the use of survey data to measure a single value (also known as a…

Q: a mean weight of 32 ounces. Assume the population what is the maximal margin of error associated…

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Q: Why researcher use different estimation method in order to do their research?

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Q: A mean is known as a statistic if it is computed from the: Opopulation. parameter. sample.

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Q: Why is the Central Limit Theorem important to understand as a concept  in sample means distributions

A: Central limit theorem: If a random sample of size n is taken from a population having mean µ and…

Q: the numerical value that is the best measure of central tendency for the "jobwant" varialbe is ____.…

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

A: sample mean converges to population mean only when the sample size is large .

Q: TRUE OR FALSE. It is inappropriate to use the mean to analyze date that are not at least interval…

A: Mean is the measure of central tendency. It is most used measure of central tendency. There are…

Q: True or false   Suppose we take many samples of the same size and calculate each interval estimate…

A: Solution Answer is True

Q: alculate 95% confident interval for single population mean.

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Q: What is the best point estimate for the mean age at first birth in the population?

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Q: What is Standard Error of Estimate?

A: Standard error: The standard error of the estimate is a measure of the accuracy of predictions. The…

Q: What is the probable error of the mean of the measurements having different values based on the…

A: Given data is: observations Distance (x) No. of measurements (f) 1 378.85 2 2 379.54 1 3…

Q: The PRC board examination has a mean score of 500 points. A review center promises to improve scores…

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Q: Relative to the population mean, what happens to the possible sample means for samples of the same…

A: The sample mean is the average of all the observations sampled from the population.  If we have…

Q: prove the theorem show that the sample mean is unbiased estimated of the population mean in…

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Q: Find out mean deviation from mean by applying direct method from the following distribution: Values:…

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Q: How to determine Estimate the P-value.

A: Introduction:P-value: The P-value is the probability of obtaining a test statistic value as extreme…

Q: True or false: The point estimate for the population mean of an xdistribution is computed from a…

A: Given statement isThe point estimate for the population mean of an xdistribution is computed from a…

Q: What statistics consists of organizing and summarizing information collected while what statistics…

A: Two different type of statistics are discussed here.

Q: In cluster sampling, a population is divided into groups then (some) members of some randomly chosen…

A: Definition  Nominal data: Nominal data measure qualitative data and it is the name of variable.…

Q: The IRS is interested in estimating the total number of tax accounts who has their own tax returns…

A:

Q: In a test of significance, the hypotheses are stated in terms of: statistics. statistics or…

A: Answer : we know that test of significance  is a procedure to access the truth of a hypothesis…

Q: If we could not measure the population mean, we could use the sample mean as a point estimator of…

A: Given:  we could not measure the population mean, we could use the sample mean as a point estimator…