Question

The Student's *t* distribution table gives critical
values for the Student's *t* distribution. Use an
appropriate *d.f.* as the row header. For a
*right-tailed* test, the column header is the value of
*α* found in the *one-tail area*row. For a
*left-tailed* test, the column header is the value of
*α* found in the *one-tail area* row, but you must
change the sign of the critical value *t* to −*t*.
For a *two-tailed* test, the column header is the value of
*α*from the *two-tail area* row. The critical values
are the ±*t* values shown.

Let *x* be a random variable that represents the pH of
arterial plasma (i.e., acidity of the blood). For healthy adults,
the mean of the *x* distribution is *μ* = 7.4†. A new
drug for arthritis has been developed. However, it is thought that
this drug may change blood pH. A random sample of 36 patients with
arthritis took the drug for 3 months. Blood tests showed that
*x* = 8.0 with sample standard deviation *s* = 1.7.
Use a 5% level of significance to test the claim that the drug has
changed (either way) the mean pH level of the blood. Solve the
problem using the critical region method of testing (i.e.,
traditional method). (Round your answers to three decimal
places.)

Statistic test=

Critical Value=

Answer #1

The Student's t distribution table gives critical
values for the Student's t distribution. Use an
appropriate d.f. as the row header. For a
right-tailed test, the column header is the value of
α found in the one-tail area row. For a
left-tailed test, the column header is the value of
α found in the one-tail area row, but you must
change the sign of the critical value t to −t.
For a two-tailed test, the column header is the value...

The Student's t distribution table gives critical
values for the Student's t distribution. Use an
appropriate d.f. as the row header. For a
right-tailed test, the column header is the value of
α found in the one-tail area row. For a
left-tailed test, the column header is the value of
α found in the one-tail area row, but you must
change the sign of the critical value t to −t.
For a two-tailed test, the column header is the value...

11) The Student's t distribution table gives critical values for
the Student's t distribution. Use an appropriate d.f. as the row
header. For a right-tailed test, the column header is the value of
α found in the one-tail area row. For a left-tailed test, the
column header is the value of α found in the one-tail area row, but
you must change the sign of the critical value t to −t. For a
two-tailed test, the column header is the...

The Student's t distribution table gives critical
values for the Student's t distribution. Use an
appropriate d.f. as the row header. For a
right-tailed test, the column header is the value of
α found in the one-tail area row. For a
left-tailed test, the column header is the value of
α found in the one-tail area row, but you must
change the sign of the critical value t to −t.
For a two-tailed test, the column header is the value...

The Student's t distribution table gives critical
values for the Student's t distribution. Use an
appropriate d.f. as the row header. For a
right-tailed test, the column header is the value of
? found in the one-tail area row. For a
left-tailedtest, the column header is the value of
? found in the one-tail area row, but you must
change the sign of the critical value t to ?t.
For a two-tailed test, the column header is the value of...

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