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a researcher concludes that the...

1.)Based on a study of heights of men and women wh play basketball, a researcher concludes that the exercise from playing basketball causes people to grow taller. Do you agree with the conclusion?

Choose which conclusion you agree with.

a.)No. There is no relationship between height and playing basketball.

b.)Yes. People who play basketball need to be tall, so they have evolved with a height advantage.

c.)Yes. People who exercise grow stronger bones and are more likely to grow taller.

d.)No. There may be a relationship between height and playing basketball, but that does not mean that one causes the other.

2.)Determine which of the four levels of measurement(nominal, ordinal, interval, ratio) is most appropriate.

Voltage measurements of batteries: 1.5V, 3V, 4.5V, 6V, and 7.5V

Choose the correct answer

a.)ordinal b.)Ratio c.)Nominal d.)Interval

3) Determine whether the description correspond to an observational study or an experiment.Forty patients with skin cancer are divided into two groups.One group receives an experimental drug to fight cancer, the other a placebo. After two years, the spread of the cancer is measured. Does the description correspond to an observational study or an experiment?

4.)Determine whether the sample described below is a simple random sample? A quality control engineer selects every 6000th hairdryer that is produced

Does this sampling plan result in a simple random sample?

a.)The sample is a random sample because each individual hairdryer has the same chance of being selected.

b.)The sample is not a simple random sample because each individual hairdryer does not have the same chance of being selected.

c.)The sample is a simple random sample because every saple of the same sizehas the chance of being selected.

d.)The sample is not a simple random sample because every sample of the same size does not have the same chance of being selected.

5.)Listed below are the playing times (in seconds) of songs that were popular at the time of writing. Find (a)the mean, (b)median, (c) mode,and (d)midrange for the given sample data.Is there one time that is very different from the others?

444 238 233 247 247 297 285 230 241 218 262 235 218 255 250 254.

a.)The mean is ?in seconds

Use a comma to separate answers as needed. (Round to one decimal place as needed.)

b.)The median in seconds?( Round to one decimal place)

c.)Select the correct choice below and fill in any answer boxes in your choice.

a.)The mode is? in seconds(Round to one decimal place)

b.)There is no mode

d.) The midrange in seconds? (Round to one decimal place)

Is there one time that is very different from the others

a.)Yes, the time of 218 seconds is very different from the others

b.)No, all the times are not very different from each other.

c.)Yes, the time of 444 seconds is very different from the others

d.)Yes the time of 292 seconds is very different from the others.

6. Listed below are the measured radiation emissions (in W/kg) corresponding to cell phones: A, B, C, D, E, F, G, H, I, J, K respectively. The media often presents reports about the dangers of cell phone radiation as a cause of cancer.Cell phone radiation must be 1.6W/kg or less. Find the a. mean, b. median, c. midrange, and d. mode for the data. Also complete parte. a.) Find the mean.(Round to three decimal places) b.) Find the median(Round to three decimal places) c.) Find the midrange(Type an integer or a decimal) d.) Find the mode(Use comma to separate answers)or state if there is no mode e.)If you are planning to purchase a cell phone, are any of the measures of center the most important statistic? Is there another statistic that is most relevant? If so,which one?A.The mean of the data set is the most important statistic because cell phones that have values close it have the safest emissions. B.The midpoint of the data set is the most important statistic because cell phones that have values close to it have the safest emissions.C.The maximum data value is the most relevant statistic because it is closest to the limit of 1.6W/kg and that cell phone should be avoided.D.The minimum data value is the most relevant statistic

Choose which conclusion you agree with.

a.)No. There is no relationship between height and playing basketball.

b.)Yes. People who play basketball need to be tall, so they have evolved with a height advantage.

c.)Yes. People who exercise grow stronger bones and are more likely to grow taller.

d.)No. There may be a relationship between height and playing basketball, but that does not mean that one causes the other.

2.)Determine which of the four levels of measurement(nominal, ordinal, interval, ratio) is most appropriate.

Voltage measurements of batteries: 1.5V, 3V, 4.5V, 6V, and 7.5V

Choose the correct answer

a.)ordinal b.)Ratio c.)Nominal d.)Interval

3) Determine whether the description correspond to an observational study or an experiment.Forty patients with skin cancer are divided into two groups.One group receives an experimental drug to fight cancer, the other a placebo. After two years, the spread of the cancer is measured. Does the description correspond to an observational study or an experiment?

4.)Determine whether the sample described below is a simple random sample? A quality control engineer selects every 6000th hairdryer that is produced

Does this sampling plan result in a simple random sample?

a.)The sample is a random sample because each individual hairdryer has the same chance of being selected.

b.)The sample is not a simple random sample because each individual hairdryer does not have the same chance of being selected.

c.)The sample is a simple random sample because every saple of the same sizehas the chance of being selected.

d.)The sample is not a simple random sample because every sample of the same size does not have the same chance of being selected.

5.)Listed below are the playing times (in seconds) of songs that were popular at the time of writing. Find (a)the mean, (b)median, (c) mode,and (d)midrange for the given sample data.Is there one time that is very different from the others?

444 238 233 247 247 297 285 230 241 218 262 235 218 255 250 254.

a.)The mean is ?in seconds

Use a comma to separate answers as needed. (Round to one decimal place as needed.)

b.)The median in seconds?( Round to one decimal place)

c.)Select the correct choice below and fill in any answer boxes in your choice.

a.)The mode is? in seconds(Round to one decimal place)

b.)There is no mode

d.) The midrange in seconds? (Round to one decimal place)

Is there one time that is very different from the others

a.)Yes, the time of 218 seconds is very different from the others

b.)No, all the times are not very different from each other.

c.)Yes, the time of 444 seconds is very different from the others

d.)Yes the time of 292 seconds is very different from the others.

6. Listed below are the measured radiation emissions (in W/kg) corresponding to cell phones: A, B, C, D, E, F, G, H, I, J, K respectively. The media often presents reports about the dangers of cell phone radiation as a cause of cancer.Cell phone radiation must be 1.6W/kg or less. Find the a. mean, b. median, c. midrange, and d. mode for the data. Also complete parte. a.) Find the mean.(Round to three decimal places) b.) Find the median(Round to three decimal places) c.) Find the midrange(Type an integer or a decimal) d.) Find the mode(Use comma to separate answers)or state if there is no mode e.)If you are planning to purchase a cell phone, are any of the measures of center the most important statistic? Is there another statistic that is most relevant? If so,which one?A.The mean of the data set is the most important statistic because cell phones that have values close it have the safest emissions. B.The midpoint of the data set is the most important statistic because cell phones that have values close to it have the safest emissions.C.The maximum data value is the most relevant statistic because it is closest to the limit of 1.6W/kg and that cell phone should be avoided.D.The minimum data value is the most relevant statistic

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