After rigorous statistical analyses have shown a very low likelihood (usually 5% or less) of a result having occurred by chance alone, the result is said to be ____.​ a.

Q: It is known that the variance of a population equals 3,600. A random sample of 144 has been selected…

A: The known population variance is 3600 and sample size is 144.

Q: If we look at college course enrollment it is known that 28% of college students take at least one…

A: Solution: d. Let X be the number of these students who are taking at least one mathematics or…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: claim : p > 0.5 n = 452 p^ = 0.64 value of test statistic = ?

Q: A study reports that 75 percent of young adults in a county get their news from online sources. A…

A: One proportion z test:   One proportion z test is used for comparing the observed population…

Q: the probability that the sample mean is between 448 and 453 is closest to _______.

A: Let M be the sample mean for the sample of size n = 100.

Q: To test whether the mean of a population is greater than 210, the appropriate null hypothesis is…

A:

Q: 53- The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known…

A: n = 15, p = 0.4Note: According to bartelbyquestion answer guidelines an expert can solve only one…

Q: Suppose that the scores on Midterm 3 for Principles of Statistics is normally distributed with…

A:

Q: If the level of significance is .01, the chance (probability) of making a Type I error is 01.1%…

A: Given that  Level of significance = 0.01

Q: A population has a mean of 50 and a standard deviation of 11. If a random sample of 36 is taken,…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: We say an outcome in the support of a random variable is significant if it lies outside of A. the…

A: The result - The random variable is significant.

Q: ation standard deviation   b. the standard deviation of the distribution of s

A: Expected value is defined as the weighted average of the values in the range.

Q: he probabilities that there are 2,3,4,5,or 6 defective television sets of a certain manufacturer are…

A: Given, Let X be the random variable x= 2, 3, 4, 5, 6 Probability of random variable P(X) = 0.34,…

Q: Suppose you draw a sample of size 55 from a population with mean 30 and variance 65. What is the…

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

Q: (a) Conduct a test of independence to determine whether hours of sleep are independent of age. State…

A: Observed Expected (O-E)^2 (O-E)^2/E 36 33.6 5.76 0.171429 60 56.16 14.7456 0.262564 77 72.96…

Q: Find the expected frequency, E, for the given values of n and p. n= 250, p, = 0.2 E; = (Type an…

A:

Q: he technology or a normal table to find each of the following. Include an appropriately labled…

A: (a) The probability that the z-score is  2.03 or less is obtained by using the standard normal…

Q: A sample of 36 is taken from a population that is normally distributed with mean 15 and standard…

A:

Q: Suppose that the distance to a certain store (i.e., X) from your home follow a NORMAL probability…

A:

Q: Refer to the sample data for polygraph tests shown below. If one of the test subjects is randomly​…

A:

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: Solution-: Given: n=569,p^=0.56 We find the test statistic=?

Q: In point estimation, data from the _____. a. sample are used to estimate the sample statistic…

A: In a point estimation data from the a. sample are used to estimate the sample statistic    b.…

Q: The proportion of items in a population that possess a specific attribute is known to be 0.30. a. If…

A: Sample size = 100Sample proportion = 0.35Population proportion= 0.30Sampling error = sample…

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.