An organization monitors many aspects of elementary and secondary education nationwide. Their 2000 numbers are often...

An organization monitors many aspects of elementary and secondary education nationwide. Their 2000 numbers are often used as a baseline to assess changes. In 2000 48 % of students had not been absent from school even once during the previous month. In the 2004 survey, responses from 6827 randomly selected students showed that this figure had slipped to 47 %. Officials would note any change in the rate of student attendance. Answer the questions below.

(a) Write appropriate hypotheses.

Upper H 0 : The percentage of students in 2004 with perfect attendance the previous month ▼ is greater than 48%. is less than 48%. is different from 48%. is equal to 48%.

Upper H Subscript Upper A Baseline : The percentage of students in 2004 with perfect attendance the previous month ▼ is greater than 48%. is equal to 48%. is less than 48%. is different from 48%.

(b) Check the necessary assumptions.

The independence condition is ▼ satisfied. not satisfied. The randomization condition is ▼ not satisfied. satisfied. The 10% condition is ▼ satisfied. not satisfied. The success/failure condition is ▼ not satisfied. satisfied.

(c) Perform the test and find the P-value. P-value equals ________ (Round to three decimal places as needed.)

(d) State your conclusion. Assume a=0.05.

A. We fail to reject the null hypothesis. There is sufficient evidence to suggest that the percentage of students with perfect attendance in the previous month has changed.

B. We can reject the null hypothesis. There is sufficient evidence to suggest that the percentage of students with perfect attendance in the previous month has changed.

C. We fail to reject the null hypothesis. There is not sufficient evidence to suggest that the percentage of students with perfect attendance in the previous month has changed.

Expert Solution

orchestra answered 1 year ago

An organization monitors many aspects of elementary and secondary education nationwide. Their 1999 numbers are often...

An organization monitors many aspects of elementary and secondary education nationwide. Their 1999 numbers are often used as a baseline to assess changes. In 1999 15 % of students had not been absent from school even once during the previous month. In the 2003 ?survey, responses from 8340 randomly selected students showed that this figure had slipped to 14 %. Officials would note any change in the rate of student attendance. Answer the questions below. ? (a) Write appropriate hypotheses....

An organization monitors many aspects of elementary and secondary education nationwide. Their 1995 numbers are often...

An organization monitors many aspects of elementary and secondary education nationwide. Their 1995 numbers are often used as a baseline to assess changes. In 1995, 42 % of students had not been absent from school even once during the previous school year. In the 1999 survey, responses from 7146 randomly selected students showed that this figure had slipped to 41 %. Officials would note any change in the rate of student attendance. Answer the questions below. (a) Write appropriate hypotheses....

An organization monitors many aspects of elementary and secondary education in a very large country. Their...

An organization monitors many aspects of elementary and secondary education in a very large country. Their 1997 numbers are often used as a baseline to assess changes. In 1997, 22% of students reported that their mothers had graduated from college. In 2003, responses from 8919 students found that this figure had grown to 24%. Is this evidence of a change in education level among mothers? Consider an event to be rare if its probability of occurring is less than 0.10...

An education publication claims that the mean expenditure per student in public elementary and secondary schools...

An education publication claims that the mean expenditure per student in public elementary and secondary schools is at least $10,200. You want to test this claim. You randomly select 16 school districts and find the average expenditure per student. The results are listed below. At α = 0.01, can you say the mean expenditure is different either way from the amount in the publication? Assume the population is normally distributed. 9,242 10,641 9,763 9,545 9,847 9,851 8,935 9,784 10,065 10,377...

2 Section 7.4 INFERENCE FOR MEANS 1) Example: The World Health Organization (WHO) monitors many variables...

2 Section 7.4 INFERENCE FOR MEANS 1) Example: The World Health Organization (WHO) monitors many variables to assess a population's overall health. One of these variables is birth weight. A low birth weight is defined as 2500 grams or less. Suppose that babies in a town had a mean birth weight of 3,500 grams with a standard deviation of 500 grams in 2005. This year, a random sample of 25 babies has a mean weight of 3,400 grams. Obviously, this...

Question