At the local college, a study found that students completed an average of 3.7 classes per...
At the local college, a study found that students completed an average of 3.7 classes per semester. A sample of 140 students was taken. What is the best point estimate for the average number of classes per semester for all students at the local college?
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At the local college, a study found that students completed an
average of 3.7 classes per...
At the local college, a study found that students completed an average of 5.9 classes per...
At the local college, a study found that students completed an average of 5.9 classes per semester. A sample of 80 students was taken. What is the best point estimate for the average number of classes per semester for all students at the local college?
PLEASE DOUBLE CHECK ANSWER, AND NO HANDWRITTEN ANSWERS. THANK YOU!! At the local college, a study...
PLEASE DOUBLE CHECK ANSWER, AND NO HANDWRITTEN ANSWERS. THANK YOU!! At the local college, a study found that students used an average of 5.6 school books per semester. A sample of 79 students was taken. What is the best point estimate for the average number of school books per semester for all students at the local college?
1. To determine the average number of hours spent studying by college students per week, a...
1. To determine the average number of hours spent studying by college students per week, a sample of 39 students was randomly selected, and found to spend an average of 17.1 hours per week, with a standard deviation of 4.3 hours. Find the 90% confidence interval for the mean number of hours spent studying per week by all college students. What is the upper and lower bound? 2. If I asked a random student how many hours they study per...
1. A newsletter publisher believes that 61% of their readers own a personal computer. Is there...
1. A newsletter publisher believes that 61% of their readers own a personal computer. Is there sufficient evidence at the 0.10 level to refute the publisher's claim? State the null and alternative hypotheses for the above scenario. 2.A local police chief claims that about 44% of all drug related arrests are ever prosecuted. A sample of 700 arrests shows that 47% of the arrests were prosecuted. Is there sufficient evidence at the 0.05 level to refute the chief's claim? State...
A recent study found out that college students average about 7 hours of sleep per night....
A recent study found out that college students average about 7 hours of sleep per night. However, researchers at an urban college in a big city are interested in showing that their students sleep less than 7 hours on the average. The researchers conducted a simple random sample of n=100 students on campus. They found out that the students averaged 6.6 hours. The previous studies showed that the population standard deviation (s) of the nightly sleeps was...
A study is being planned to estimate the mean number of semester hours taken by students...
A study is being planned to estimate the mean number of semester hours taken by students at a college. The population standard deviation is assumed to be σ = 4.7 hours. How many students should be included in the sample to be 99% confident that the sample mean 3 is within one semester hour of the population mean gu for all students at this college?
A researcher found that the number of days of school missed per semester by college students...
A researcher found that the number of days of school missed per semester by college students was normally distributed with a mean of 4.00 and standard deviation of 1.00. What conclusion can you draw from these data? No students missed fewer than 3 days of school per semester. All students missed at least one day of school per semester. Very few students missed between 3 and 5 days of school per semester. Most students missed between 3 and 5 days...
A study on exercise habits used a random sample of 2,540 college students (1,220 females and...
A study on exercise habits used a random sample of 2,540 college students (1,220 females and 1,320 males). The study found the following: 818 of the females in the sample exercise on a regular basis. 924 of the males in the sample exercise on a regular basis. The average time that the 1742 students who exercise on a regular basis (818 + 924) spend exercising per week is 4.2 hours. What is the point estimate for the average amount of...
In a recent study, it was found that 59% of college students have pulled an all...
In a recent study, it was found that 59% of college students have pulled an all nighter at least once in the past year to complete work for their courses. We believe that this follows a binomial distribution. Complete parts (a) through (e) below based on a random sample of 12 college students a) What is the probability that exactly 6 of the college students pulled an all nighter? The probability is (Round to four decimal places.) b) What is...
To study the eating habits of students at a local college
1. To study the eating habits of students at a local college, thirty randomly selected students were surveyed to determine the number of times they had purchased food at the school cafeteria during the last week. The following results were obtained (a) Organize the given data by creating a frequency distribution3. The frequency distribution shown in the following table lists the number of hours per day a randomly selected sample of teenagers spent watching television. Where possible, determine what percent of...
A study is being planned to estimate the mean number of semester hours taken by students at a college. The population standard deviation is assumed to be σ = 4.7 hours. How many students should be included in the sample to be 99% confident that the sample mean 3 is within one semester hour of the population mean gu for all students at this college?
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