Question

Can someone please check my work? If I made an error can you please correct me and show me the steps of how to get there?

Date 1. A national hal survey asked 207 U.s. 3rd graders what their favorite fruit is. ask a. Identify the variable, favorite pre b. Is the e. What is the implied population? aoz e variablequalitativor quantitative (circle one) 2. Categorize nominal, ordinal, interval, or ratio. these measurements associated with smartphones according to level: a. The priee of 30 different models of new smartphones, in U.S. dollars_ato b. The battery life of 30 different models of new smartphones measured as "below average," "average," or "above average"_ratio c. The model names of 30 different models of new smartphones_nolE d. Customer gender: male, female, other lominal e. The expected lifetime (in years) for 30 different models of new smartphones iha f. Operating temperature of 30 different models of new smartphones inter va nad For each scenario below, indicate which sampling technique was used: simple random sample, stratified sample, systematic sample, cluster sample, or convenience sample To conduct a pre-election opinion poll on a proposed amendment to the state constitution, a random sample of 10 telephone prefixes (first three digits of the phone number) was selected, and all households from the phone prefixes selected was called a. To conduct a study on depression among the elderly, a sample of 30 patients in one nursing home was used. St racti phed Convenjence b. c. To maintain quality control in a brewery, every 20th bottle of beer coming off the production line was opened and tested. syste mut'C Subscribers to the magazine Sound Alive were assigned numbers. Then a sample of 30 ubscribers was selected by using a random number table. The subscribers in the sample d. were invited to rate new songs for a "What the Subseribers Think" column To judge the appeal of a proposed television sitcom, a random sample of 10 people from each of three different age categories was selected and those chosen were asked to rate a pilot show. e.

Answer 1

1:

(c) All U.S. 3rd graders

2:

(b) It is categorical variable. Since order can be defined between categories so it is ordinal.

(e) It is quantitative variable. It is ratio.

4(c)

Symmetric, unimodal

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Rest all are correct.