A school principal claims that the number of students who are tardy to school does not vary from month to month. A survey over the school year produced the following results. Using a 0.10 level of significance, test a teacher's claim that the number of tardy students does vary by the month. Number Aug. 17 Oct. Sept. 17 16 Tardy Students Nov. Dec. Jan. Feb. 15 8 7 19 Mar. 8 Ho: Pi = Ha There is a difference in tardiness from month to month. Apr. 6 May 14 Copy Data Step 1 of 4: State the null and alternative hypotheses in terms of the expected proportion for each month. Enter your answer as a fraction or a decimal rounded to six decimal places, if necessary.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Step 1 of 4:

State the null and alternative hypotheses in terms of the expected proportion for each month. Enter your answer as a fraction or a decimal rounded to six decimal places, if necessary.

H0: pi=________p
Ha: There is a difference in tardiness from month to month.

Step 2 of 4:

Calculate the expected value for the number of tardies in October. Enter your answer as a fraction or a decimal rounded to three decimal places.

Step 3 of 4:

Compute the value of the test statistic. Round any intermediate calculations to at least six decimal places, and round your final answer to three decimal places.

Step 4 of 4:

Draw a conclusion and interpret the decision.

A school principal claims that the number of students who are tardy to school does not vary from month to month. A survey over the
school year produced the following results. Using a 0.10 level of significance, test a teacher's claim that the number of tardy students does
vary by the month.
Number
Aug.
17
Sept. Oct.
17 16
Tardy Students
Nov. Dec.
15
8
Jan. Feb.
7 19
Ho: Pi =
Ha: There is a difference in tardiness from month to month.
Mar. Apr.
8
May
6 14
Copy Data
Step 1 of 4: State the null and alternative hypotheses in terms of the expected proportion for each month. Enter your answer as a
fraction or a decimal rounded to six decimal places, if necessary.
Transcribed Image Text:A school principal claims that the number of students who are tardy to school does not vary from month to month. A survey over the school year produced the following results. Using a 0.10 level of significance, test a teacher's claim that the number of tardy students does vary by the month. Number Aug. 17 Sept. Oct. 17 16 Tardy Students Nov. Dec. 15 8 Jan. Feb. 7 19 Ho: Pi = Ha: There is a difference in tardiness from month to month. Mar. Apr. 8 May 6 14 Copy Data Step 1 of 4: State the null and alternative hypotheses in terms of the expected proportion for each month. Enter your answer as a fraction or a decimal rounded to six decimal places, if necessary.
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