Question

In: Statistics and Probability

A researcher wanted to determine the number of televisions in households. He conducts a survey of...

A researcher wanted to determine the number of televisions in households. He conducts a survey of 40 selected households and obtains the data in the accompanying table. Complete parts (a) through (h) below.

Table of television counts:

0 3 2 2 1 2 1 3

3 2 1 4 2 1 3 2

2 1 1 3 1 1 2 2

2 4 0 1 4 5 2 1

2 4 2 1 1 2 2 3

A.) Are these data discrete or continuous? Explain?

B.) Construct a frequency distribution of the data

C.) Construct a relative frequency distribution of the data (Type an integer or decimal. Do not round)

D.) What percentage of households in the survey have three televisions? (Type an integer or decimal. Do not round)

E.) What percentage of household in the survey have four or more televisions? (Type an integer or decimal. Do not round)

F.) Construct a frequency histogram of the data.

G.) Construct a relative frequency histogram of the data.

H) Describe the shape of the distribution.

Solutions

Expert Solution


Related Solutions

1. A researcher conducts a survey of registered voters and divides the population by township before...
1. A researcher conducts a survey of registered voters and divides the population by township before obtaining a sample. This sampling technique is called: Select one: a. Convenience sampling. b. Systematic sampling. c. Cluster sampling. d. Stratified sampling. 2. Suppose you were preparing a presentation on your department's budget expenses for next year. You have seven different budget categories and you wanted to create a graph that best compares the percentages of the total budget for each category. What type...
The following table is the result of a survey of 1109 households showing the number of...
The following table is the result of a survey of 1109 households showing the number of cars they have: ​​Number of Cars​​ 0 ​1​2​3​≥4 ​​Percent of households​ 19​​13​33​26​9 a- Determine the sample proportion of households that own two or more cars. b- If the proportion of households that own two or more cars is equal to 0.5, determine the probability that in a sample of 999 households at least 509 would own two or more cars. c- The margin of...
The number of unemployed is calculated by: a large monthly survey of households conducted for the...
The number of unemployed is calculated by: a large monthly survey of households conducted for the Bureau of Labor Statistics. counting the people currently collecting unemployment benefits. A large quarterly survey of businesses conducted for the Labor Department. counting the people either currently or recently collecting unemployment benefits. Stagflation is when the economy has: high unemployment coupled with low inflation at the same time. low unemployment and inflation at the same time. low unemployment coupled with high inflation at the...
The Human Resources Department of a company conducts a survey to determine if a new medical...
The Human Resources Department of a company conducts a survey to determine if a new medical insurance plan is viewed favorably. Out of 200 employees surveyed 80 said they liked the change.    a. Calculate a 95% confidence interval for the population proportion who view the change favorably. b. What is the proper interpretation of the interval constructed in Part a? i. There is a 95% chance that the population proportion lies within the constructed interval. ii. If 20 similar...
A researcher wanted to determine if the incidence of influenza was more frequent in Caucasian or...
A researcher wanted to determine if the incidence of influenza was more frequent in Caucasian or Hispanic populations. He decided to investigate by accessing Emergency Room records at a local hospital. He found influenza was 2x times more frequent in Hispanics than in Caucasians. What could be the possible bias associated with the study and how did it influence the findings of the study? (5 points) Describe in detail how would you conduct the above study so that selection bias...
A researcher conducts a long-term study of the correlation between the number of children a family...
A researcher conducts a long-term study of the correlation between the number of children a family has (X) and the number of pets they have 20 years later (Y). He finds the following results: Children (X)                                   Pets 20 years later (Y) 2                                                       4 4                                                       6                 3                                                       1 0                                                       2 1                                                       2 First, the researcher wants to calculate the correlation between the two variables. Using this dataset, calculate r. (3 pts) Next, the researcher wants to use his knowledge about...
A researcher conducts a survey of attitudes towards early prison release. She surveys 170 women and...
A researcher conducts a survey of attitudes towards early prison release. She surveys 170 women and 200 men. She finds that 32% of women are in favor of early release., and 20% of men are in favor of early release. Conduct a statistical test to determine whether there is a difference in attitudes between women and men in their attitudes about early release. Use alpha= .05 to test the statistical hypothesis. State the hypothesis in statistical terms: What is the...
A researcher wanted to learn whether the urge to smoke cigarettes was associated with the number...
A researcher wanted to learn whether the urge to smoke cigarettes was associated with the number of times a person exercised in the last week. So the researcher gathered 10 who smoke for the study. Participants were asked to rate their urge to smoke on a scale of 0 (no urge) to 10 (extreme urge), and to give the number of times each had worked out in the last week. Using the data below, an alpha of .05 (two-tailed), use...
1. Coffee. A student wanted to determine if there is a difference in the number of...
1. Coffee. A student wanted to determine if there is a difference in the number of calories between comparable coffee drinks at Starbucks and Seattle's Best Coffee (SBC), two major coffee retailers. She found caloric information about 10 different drinks and created the table shown below: Drink Starkbucks SBC Cappucino 120 130 Latte 190 160 Vanilla Latte 250 240 Iced Latte 130 140 Mocha 260 390 White Chocolate Mocha 400 310 Peppermint Mocha 330 410 Iced Mocha 200 240 Hot...
A researcher wishes to estimate the number of households with two computers. How large a sample...
A researcher wishes to estimate the number of households with two computers. How large a sample is needed in order to be 98% confident that the sample proportion will not differ from the true proportion by more than 4%? A previous study indicates that the proportion of households with two computers is 25%.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT