588 words - 3 pages

TI-84 Plus Step by Step

Hypothesis Test for the Mean and the zDistribution (Data)

1. Enter the data values into L1.

1. Press STAT and move the cursor to TESTS.

1. Press l for ZTest.

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1. Move the cursor to Data and press ENTER.

1. Type in the appropriate values.

1. Move the cursor to the appropriate alternative hypothesis and press ENTER.

1. Move the cursor to Calculate and press ENTER.

Example TI8–1

This relates to Example 8–4 from the text. At the 10% significance level, test the claim that μ < 515, given the data values.

496 | 506 | 507 | 505 | 438 | 499 | 505 | 522 | 531 | 762 | 513 | 493 |

522 | 668 | 543 | 519 | 349 | 506 | 519 | 516 | 714 | 517 | 511 | 551 |

287 | 523 | 576 | 516 | 515 | 500 | 243 | 509 | 523 | 503 | 414 | 504 |

The test statistic ...view middle of the document...

The test statistic is z = 1.319561037, and the P-value is 0.0934908728.

TI-84 Plus Step by Step

Hypothesis Test for the Mean and the t Distribution (Data)

1. Enter the data values into L1.

1. Press STAT and move the cursor to TESTS.

1. Press 2 for T-Test.

1. Move the cursor to Data and press ENTER.

1. Type in the appropriate values.

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1. Move the cursor to the appropriate alternative hypothesis and press ENTER.

1. Move the cursor to Calculate and press ENTER.

Hypothesis Test for the Mean and the t Distribution (Statistics)

1. Press STAT and move the cursor to TESTS.

1. Press 2 for T-Test.

1. Move the cursor to Stats and press ENTER.

1. Type in the appropriate values.

1. Move the cursor to the appropriate alternative hypothesis and press ENTER.

1. Move the cursor to Calculate and press ENTER.

TI-84 Plus Step by Step

Hypothesis Test for the Proportion

1. Press STAT and move the cursor to TESTS.

1. Press 5 for 1-PropZTest.

1. Type in the appropriate values.

1. Move the cursor to the appropriate alternative hypothesis and press ENTER.

1. Move the cursor to Calculate and press ENTER.

Example TI8–3

Test the claim that 40% of all telephone customers have call-waiting service, when n = 100 and . Use α = 0.01.

The test statistic is z = –0.6123724357, and the P-value is 0.5402912598.

Decision Rule When Using a P-Value

* If P-value ≤ α, reject the null hypothesis.

* If P-value > α, do not reject the null hypothesis.

Make the decision. Since the test value 1.79 is greater than the critical value 1.65, the decision is to reject the null hypothesis.

Make the decision. The decision is to not reject the null hypothesis, since the P-value is greater than 0.05. See Figure 8–18.

Figure 8–18

P-Values and α Values for Example 8–7

Step 5

Summarize the results. There is not enough evidence to reject the claim that the average wind speed is 8 miles per hour.

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