Teacher Joy conducted a census in her class, and she found out that the average time that her students devote to studying is 2.25 hours, their average height is 147 cm, and a random sample of 10 students got an average of 87% in their latest quiz.Which of the given numbers is a statistic?*1 point2.25 Hours147cm87%10 Students

Sir Gary randomly chose five students from his class of 40 and found out that these five students devote an average of 1.6 hours daily for play and recreational activities.Which of the given numbers is a statistic?*1 pointPopulation sizeAverage time spent asleepSample sizeAverage length of playing time

A simple random sample of seven (7) students is selected, and the students are asked how much time they spent studying for their University subjects (combined) outside class times. From past experience, it is known that these times (in hours) are distributed normally.The times (in hours) for the sample of students are as follows:2.3 7.2 4.5 12.5 6.6 2.5 5.5Based on these results, a confidence interval estimate for the population mean is found to be 5.9 ± 2.6.The level of confidence the researcher has used is closest to:-Group of answer choices95%90%97.5%99%

For an upcoming government project, you are required to find the average height of the students in Class VIII of a given school. Instead of asking every student, you took a few students as your sample and noted their heights in the table given below. Roll Number Height8012 121.92 cm8045 133.21 cm8053 141.34 cm8099 126.23 cm8125 175.74 cmQuestion 2/3MandatorySamplingWhat is the mean of the sample?133.21139.69146.76141.34

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 proportion of all female college students who exercise on a regular basis? (Numbers are rounded to two decimal places as needed.)  Incorrect. You need to find what proportion of the females in the sample exercise on a regular basis. It looks like you incorrectly used the total sample size (2,540) in the denominator.xReset this ActivityWhat is the point estimate for the proportion of all college students who exercise on a regular basis? (Numbers are rounded to two decimal places as needed.)

A recent survey asked 90 students, How many hours do you spend on the computer in a typical day?Of the 90 respondents, 3 said 1 hour, 5 said 2 hours, 15 said 3 hours, 25 said 4 hours, 20 said 5 hours, 15 said 6 hours, 5 said 7 hours, 1 said 8 hours, and 1 said 9 hours.What is the average (mean) number of hours spent on the computer?0.544.445