Microsoft Office Tutorials and References

In Depth Information

(a) Use Excel to the right of the table to ﬁnd the sample size, mean, standard

deviation, and standard error of the mean for these data. Label your

answers, and use two decimal places for the mean, standard deviation, and

standard error of the mean.

(b) Enter the null hypothesis and the research hypothesis for these data on

your spreadsheet.

(c) Use Excel’s TINV function to ﬁnd the 95 % conﬁdence interval about the

mean for these data. Label your answers on your spreadsheet. Use two

decimal places for the lower limit and the upper limit of the conﬁdence

interval.

(d) Enter the result of the test on your spreadsheet.

(e) Enter the conclusion of the test in plain English on your spreadsheet.

(f) Print your ﬁnal spreadsheet so that it ﬁts onto one page (if you need help

(g) Draw a picture of the conﬁdence interval, including the reference value,

onto your spreadsheet.

(h) Save the ﬁnal spreadsheet as: TROUT10

3. According to Bremer and Doerge (
2010
), only one species of oak tree, Quercus

tomentella Engelm, grows on the island of Guadalupe. Let’s suppose that ﬁve

years ago, the average size of acorn nut as measured by length from this species

of oak was 27 millimeters (mm). Suppose that you have been asked to

determine if this average size has changed this year. You decide to run a small

sample of oak acorns to test your Excel skills, and the hypothetical data are

given in Fig.
3.12
:

Create an Excel spreadsheet with these data.

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