Inv 5.3.1 Practice with Point Estimate and Sampling Error
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Last updated over 4 years ago
10 questions
3
You conduct an experiment on plants to see how the use of playing happy, calming music affected a plant's growth rate. Plants who were not exposed to happy, calming music grew approximately 2' over the course of two months. Therefore, you decided to measure the success of your experiment based on how many plants grew more than 2" over the course of two months. Of the 200 plants exposed to happy, calming music, 60 grew 2" or less and the other 140 plants grew more than 2".
What parameter are you trying to estimate? What was the point estimate for this experiment? Include all calculations needed to support your final answer.
You conduct an experiment on plants to see how the use of playing happy, calming music affected a plant's growth rate. Plants who were not exposed to happy, calming music grew approximately 2' over the course of two months. Therefore, you decided to measure the success of your experiment based on how many plants grew more than 2" over the course of two months. Of the 200 plants exposed to happy, calming music, 60 grew 2" or less and the other 140 plants grew more than 2".
What parameter are you trying to estimate? What was the point estimate for this experiment? Include all calculations needed to support your final answer.
3
You conduct a survey on the number of students you encounter who like strawberries. Of the 70 selected, 34 liked strawberries and 36 did not.
What parameter are you trying to estimate? What was the point estimate for this experiment? Include all calculations needed to support your final answer.
You conduct a survey on the number of students you encounter who like strawberries. Of the 70 selected, 34 liked strawberries and 36 did not.
What parameter are you trying to estimate? What was the point estimate for this experiment? Include all calculations needed to support your final answer.
3
According to a nationwide survey, approximately 10% of Americans are left-handed. You randomly survey 70 students and find that 5 of them are left-handed and 65 are right-handed.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
According to a nationwide survey, approximately 10% of Americans are left-handed. You randomly survey 70 students and find that 5 of them are left-handed and 65 are right-handed.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
3
You spin a spinner, numbered 1-10, fifty times. Of those fifty times, for twenty of them you spun a number divisible by 3.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
You spin a spinner, numbered 1-10, fifty times. Of those fifty times, for twenty of them you spun a number divisible by 3.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
3
You flip a coin 240 times and record 100 tails.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
You flip a coin 240 times and record 100 tails.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
3
25% of all 2-year old boys in the United States are 85 cm tall or less. You take a random sample of forty 2-year old boys and find that twenty-eight of the boys are taller than 85 cm.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
25% of all 2-year old boys in the United States are 85 cm tall or less. You take a random sample of forty 2-year old boys and find that twenty-eight of the boys are taller than 85 cm.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
3
64% of all adults living in the United States own their own home. You take a random sample of 350 U.S. adults and find that 252 of them own their own home.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
64% of all adults living in the United States own their own home. You take a random sample of 350 U.S. adults and find that 252 of them own their own home.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
3
5.2% of all employed Americans have more than one job. You take a random sample of 400 employed Americans and find that 380 of them only work one job.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
5.2% of all employed Americans have more than one job. You take a random sample of 400 employed Americans and find that 380 of them only work one job.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
3
33.4% of Americans 25 or older have a college degree, according to recent statistics. You take a random sample of 45 people age 25 or older and find that 27 do not have a college degree.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
33.4% of Americans 25 or older have a college degree, according to recent statistics. You take a random sample of 45 people age 25 or older and find that 27 do not have a college degree.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
3
36% of Americans have a valid passport. You take a random sample of 140 Americans and find that 49 of them have a valid passport.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.
36% of Americans have a valid passport. You take a random sample of 140 Americans and find that 49 of them have a valid passport.
What parameter are you trying to estimate? What was the sampling error for this experiment? Include all calculations needed to support your final answer.