in 1980 more than 35% of cars purchased had a manual transmission. by 2007 the proportion...
in 1980 more than 35% of cars purchased had a manual transmission. by 2007 the proportion decreased to 7.7%. a random sample of college students who owned cars revealed the following: out of 130 cars, 24 had stick shifts. estimate the proportion of college students who drive sticks with 90% confidence.
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in 1980 more than 35% of cars purchased had a manual
transmission. by 2007 the proportion...
In 1980 more than 35% of cars purchased had a manual transmission (ie, stick shift). By...
In 1980 more than 35% of cars purchased had a manual transmission (ie, stick shift). By 2007 the proportion had decreased to 7.7%. A random sample of college students who owned cars revealed the following: out of 130 cars, 20 had stick shifts. Estimate the proportion of college students who drive sticks with 95% confidence. Round your answers to three decimal places. Source: www.pollingreport.com
A department of education reported that in 2007, 68% of students enrolled in college or a...
A department of education reported that in 2007, 68% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this sample, 106 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 90% confidence interval to estimate the actual proportion of students enrolled...
A department of education reported that in 2007, 63% of students enrolled in college or a...
A department of education reported that in 2007, 63% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 320 individuals who graduated from high school 12 months prior was selected. From this sample, 204 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 90% confidence interval to estimate the actual proportion of students enrolled...
24. Find the minimum sample size required to estimate a population proportion with a margin of...
24. Find the minimum sample size required to estimate a population proportion with a margin of error = 0.05 a confidence level of 90%, and from a prior study, p is estimated to be .25 (a) 203 (b) 329 (c) 247 (d) 396 (e) 289 25. In a survey of 385 students at Broward College, North Campus, results revealed that 154 students were born outside of the USA. Construct a 96% confidence interval estimate for the proportion of students who...
conducted to determine success rates of students enrolled in the Statistics courses offered at South Plains College for the fall semester of 2015. A random sample of 14 students was taken, and...
conducted to determine success rates of students enrolled in the Statistics courses offered at South Plains College for the fall semester of 2015. A random sample of 14 students was taken, and we recorded each student's age, final average, gender, # hours worked per week, race, and t attended this semester). Use the results from the following table to answer all parts of #2. he attendance record (# of classes not Age 20 18 19 Final Average Gender # Hrs...
Using the answers from the table above, answer ALL of the questions below. For questions 1 - 13, draw a normal curve and indicate the area that you are calculating the probability of. For questions...
Using the answers from the table above, answer ALL of
the questions below. For questions 1 - 13, draw a
normal curve and indicate the area that you are calculating the
probability of. For questions 14 – 22, use the
appropriate formulas and show all of your
calculations.
Be sure to turn in the table above along with your
answers to all of the questions below. Place your answers in a
folder with your name clearly written at the top...
. A study was conducted to determine success rates of students enrolled in the Statistics courses...
. A study was conducted to determine success rates of students enrolled in the Statistics courses offered at South Plains College for the fall semester of 2015. A random sample of 14 students was taken, and we recorded each student’s age, final average, gender, # hours worked per week, race, and the attendance record (# of classes not attended this semester). Use the results from the following table to answer all parts of #2. Age Final Average Gender # Hrs...
1. When 385 junior college students were surveyed, 170 said that they have previously 1). owned...
1. When 385 junior college students were surveyed, 170 said that they have previously 1). owned a motorcycle. Find a point estimate for p. the population proportion of students who have previously owned a motorcycle. A) 0.558 B) 0.442 C) 0.306 D) 0.791 2. True or False: The general form of a large-sample (1 - a) 100% confidence interval 2) p(1-P) for a population proportion pis ptz, where p = is the sample proportion of observations with the characteristic of...
1. Use the given degree of confidence and sample data to construct a confidence interval for...
1. Use the given degree of confidence and sample data to construct a confidence interval for the point) population proportion p. A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all voters in the state who favor approval. 0 0.438<p0.505 0 0.444 p0.500 0 0.435<p<0.508 O 0.471 p0.472 2. Use the given data to find the minimum sample size required...
question #24 313 7-1 Estimating a Population Proportion <p 174% sult from part (a)tothis 95% onfidence iterval for 5 subjects who she 45 sutycts given a placebo instead of OyContin: 1.93% <...
question #24
313 7-1 Estimating a Population Proportion <p 174% sult from part (a)tothis 95% onfidence iterval for 5 subjects who she 45 sutycts given a placebo instead of OyContin: 1.93% < ρ a. developed y When she was 9 years of age, Emily Rosa did a science fair experimem sed professional souch therapists to see if they could sense her energy fieldhe be tn select either her right hand or her left hand, and then she asked the therapist...
In 1980 more than 35% of cars purchased had a manual transmission (ie, stick shift). By 2007 the proportion had decreased to 7.7%. A random sample of college students who owned cars revealed the following: out of 130 cars, 20 had stick shifts. Estimate the proportion of college students who drive sticks with 95% confidence. Round your answers to three decimal places. Source: www.pollingreport.com
A department of education reported that in 2007, 68% of students enrolled in college or a trade school within 12 months of graduating from high school. In 2013, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this sample, 106 students were found to be enrolled in college or a trade school. Complete parts a through c below. a. Construct a 90% confidence interval to estimate the actual proportion of students enrolled...
conducted to determine success rates of students enrolled in the Statistics courses offered at South Plains College for the fall semester of 2015. A random sample of 14 students was taken, and we recorded each student's age, final average, gender, # hours worked per week, race, and t attended this semester). Use the results from the following table to answer all parts of #2. he attendance record (# of classes not Age 20 18 19 Final Average Gender # Hrs...
Using the answers from the table above, answer ALL of
the questions below. For questions 1 - 13, draw a
normal curve and indicate the area that you are calculating the
probability of. For questions 14 – 22, use the
appropriate formulas and show all of your
calculations.
Be sure to turn in the table above along with your
answers to all of the questions below. Place your answers in a
folder with your name clearly written at the top...
1. When 385 junior college students were surveyed, 170 said that they have previously 1). owned a motorcycle. Find a point estimate for p. the population proportion of students who have previously owned a motorcycle. A) 0.558 B) 0.442 C) 0.306 D) 0.791 2. True or False: The general form of a large-sample (1 - a) 100% confidence interval 2) p(1-P) for a population proportion pis ptz, where p = is the sample proportion of observations with the characteristic of...
1. Use the given degree of confidence and sample data to construct a confidence interval for the point) population proportion p. A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all voters in the state who favor approval. 0 0.438<p0.505 0 0.444 p0.500 0 0.435<p<0.508 O 0.471 p0.472 2. Use the given data to find the minimum sample size required...
question #24
313 7-1 Estimating a Population Proportion <p 174% sult from part (a)tothis 95% onfidence iterval for 5 subjects who she 45 sutycts given a placebo instead of OyContin: 1.93% < ρ a. developed y When she was 9 years of age, Emily Rosa did a science fair experimem sed professional souch therapists to see if they could sense her energy fieldhe be tn select either her right hand or her left hand, and then she asked the therapist...
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