A _______________ is calculated from a population and a _________________ is calculated from a sample.
Group of answer choices
a.measurement scale; frequency distribution
b.statistic; parameter
c.frequency distribution; measurement scale
d.parameter; statistic
A _______________ is calculated from a population and a _________________ is calculated from a sample. Group...
Will rate!! 1.) possible answers: -statistic -sample -parameter -number 2.) possible answers: -sampling -sampled -population (1) is a random variable that is calculated from a sample. The probability distribution of the random variable is referred to as the (2) distribution. sampling sampled population
Determine whether the given value is a statistic or a parameter. A sample of students is selected and it is found that 40% own a computer Choose the correct statement below Statistic because the value is a numerical measurement describing a characteristic of a sample. O Parameter because the value is a numerical measurement describing a characteristic of a population O Parameter because the value is a numerical measurement describing a characteristic of a sample. O Statistic because the value...
A random sample of size n = 13 obtained from a population that is normally distributed results in a sample mean of 45.2 and sample standard deviation 12.6. An independent sample of size n=17 obtained from a population that is normally distributed results in a sample mean of 51.1 and sample standard deviation 14.9. Does this constitute sufficient evidence to conclude that the population means differ at the a= 0.10 level of significance? Click here to view the standard normal...
Please answer all parts. 7. A sample statistic is an estimator of the population parameter, if the mean of the sampling distribution for the sample statistic is the 8. A distribution has a mean of 12 and a variance of 250. Find the second moment about the origin. Answer:
You need to estimate a population standard deviation based on data from a sample. What distribution would you need to use to look up the critical value? Group of answer choices F-distribution Chi-square Distribution Normal Distribution Student's t
A. Suppose you take a sample of size n from a population and calculate a statistic from that sample. The statistic could be a sample proportion p, a sample mean x, or another statistic. Then suppose we repeat this process over and over again until we find all possible samples of size n from the population (this is a theoretical idea) and we calculate the same statistic from 1. each sample. The collection of all of the statistics calculated is...
A random sample of size 36 is taken from a population with mean µ = 18 and standard deviation σ = 5. What are the expected value and the standard deviation for the sampling distribution of the sample mean? Group of answer choices a. 1.425 and 2.66, respectively b. 18 and 5, respectively c. 1.425 and 0.83, respectively d. 18 and 0.83, respectively
A random sample of size 15 is obtained from a normal population yielding a sample standard deviation of 20. Test the null hypothesis that the unknown population variance is greater than or equal to 162 versus the alternative that the unknown population variance is less than 162 using a 5% level of significance a. Set up the null and alternative hypotheses, clearly defining any unknown parameters. Note the “=” value is always in the null hypothesis. b. Find a test...
A 95% confidence interval's endpoints Group of answer choices define the range containing 95% of the possible values. are random variables that lie on opposite sides of the true value with 95% probability. can be calculated from the population distribution using an asymptotic formula. will contain the estimator within their range 95% of the time under the null hypothesis. To assess "how big" an estimated slope coefficient is (i.e., assess its economic significance), you should Group of answer choices analyze...
(c) A sample of 80 people is selected at random from a demographic group to complete a questionnaire on lifestyle choices. As part of this survey, each respondent is asked whether he or she regularly take part in organised sport. It is known that 29% of all the people in the demographic group regularly take part in organised sport. Use a suitable approximation to calculate the probability that at least 20 of the people in the sample regularly take part...