Health Survey In a survey of 1020 adults in the United States, 44% said that they wash their hands after riding public transportation (based on data from KRC Research). a. Identify the sample and population. b. Is the value of 44% a statistic or parameter? c. What is the level of measurement of the value of 44%? (nominal, ordinal, interval, ratio) d. Are the numbers of subjects in such surveys discrete or continuous?

The diameters of ball bearings produced in a manufacturing process can be described using a uniform distribution over the interval 8.5 to 10.5 millimeters. What is the mean diameter of ball bearings produced in this manufacturing​ process?    A.  10 millimeters  B.  10.5 millimeters  C.  9.5 millimeters  D.  9 millimeters

Name: ID: B 14. Is the sample mean, calculated from a random sample, an unbiased estimator of the population mean? Explain.

A congressperson wants to come up with a single value to describe the prices of homes in their district. However, their district consists of a few homes that are extremely expensive compared to the others. Which descriptive statistic should they use? a. Range b. Mode c. Median d. Mean

Determine the sample in this research scenario: Dr. Eglovitch wants to know whether type of exercise, running or yoga, improves post-partum depression. One hundred women are recruited from obstetricians’ offices in the Richmond area.   Group of answer choices A.100 postpartum women whose depression was measured B.Type of exercise C. Postpartum depression D. All postpartum women

could you please answer with paper and pen?

Indicate the statistical test you would conduct. Respondents in a survey of 1,000 households were asked about their travel history. Specifically, they were asked how often they have been to Europe in the past five years (using a ratio scale). People were also classified by interest type (art-lovers, food-lovers, or sports-lovers). The question is whether interest type influences travel history. Two-sample t-test Paired sample t-test One-way ANOVA none of those QUESTION 6 What is the corresponing alternative hypothesis for the scenario in question #5? The three interest types do not differ with regard to the number of times they have been to Europe in the last five years. Interest type and travel to Europe are not related. The number of times people have been to Europe does not depend on interest type. The three interest types differ with regard to the number of times they have been to Europe in the last five years.

A programmer plans to develop a new software system. In planning for the operating system that he will​ use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99​% confident that his estimate is in error by no more than three percentage points? Complete parts​ (a) through​ (c) below.       Question content area bottom Part 1 ​a) Assume that nothing is known about the percentage of computers with new operating systems.   n=enter your response here ​(Round up to the nearest​ integer.) Part 2 ​b) Assume that a recent survey suggests that about 90​% of computers use a new operating system.   n=enter your response here ​(Round up to the nearest​ integer.) Part 3