Determine the critical values for the following tests of the

Determine the critical values for the following tests of the population mean with an unknown population standard deviation. The analysis is based on 10 observations drawn from a normally distributed population at a 10% level of significance. Use Table 2. (Negative values should be indicated by a minus sign. Round your answers to 3 decimal places.)

Solution

Here,

df = n - 1 = 9

a)

For a right tailed test, 0.10 level, df = 9,

tcrit = 1.383 [ANSWER]

b)

For a two tailed test, 0.10 level, df = 9,

tcrit = +/- 1.833 [ANSWER]

c)

For a left tailed test, 0.10 level, df = 9,

tcrit = -1.383 [ANSWER]

d)

For a two tailed test, 0.10 level, df = 9,

tcrit = +/- 1.833 [ANSWER]