1. State hypotheses by filling in the symbol (=,<,>, or not equal) and the popul

Question

1. State hypotheses by filling in the symbol (=,<,>, or not equal) and the population mean and determine if one or two tail:

2. Find critical z values with table F (which is below) is:

3. T test value is (round to three decimal places):

4. Reject the null or do not reject the null:

5. Conclusion: is or is not enough evidence.

At a recent PGA tournament (the Honda Classic at Palm Beach Gardens, Florida) the following scores were posted for eight randomly selected golfers for two consecutive days. At -0.10, is there evidence of a difference in mean scores for the two days? Assume the variables are normally or approximately normally distributed and use D for the mean on Thursday minus the mean on Friday Golfer Thursday 70 69 68 70 66 64 65 67 Friday 69 70 75 70 67 74 67 68 Source: Washington Observer-Reporter. ar State the hypotheses and identify the claim with the correct hypothesis. not claim claim This hypothesis test is a two-tailed test Part 2 out of 5 Find the critical value(s). Enter the values in ascending order and round the answers to three decimal places. Critical values are and

Explanation / Answer

The statistical software output for this problem is:

Paired T hypothesis test:
D = 1 - 2 : Mean of the difference between Thursday and Friday
H0 : D = 0
HA : D 0
Hypothesis test results:

Hence,

Part - 2: From the table,

Critical values are -1.895 and 1.895

Part - 3: T test value = -1.946

Part - 4: Reject the null

Part - 5: is not enough evidence

Difference Mean Std. Err. DF T-Stat P-value Thursday - Friday -2.625 1.3487759 7 -1.9462092 0.0927

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