1.In a survey, 32%
of the respondents declared that they allocution to their pets on the answering apparatus or telephone. A veterinarian believed this aftereffect to be too high, so
pet owners and apparent that
of them batten to their pet on the answering apparatus or telephone. Does the veterinarian accept a appropriate to beskeptical? Use the
level of significance.
2.Test the antecedent application the classical access and the P-value approach.
Upper H 0 : p equals 0.45 against Upper H 1 : p beneath than 0.45H0: p=0.45 against H1: p<0.45
n equals 150 breach x equals 62 breach alpha equals 0.05
Complete genitalia (a) through (c) below.
(a) Determine the critical value(s) for a right-tailed analysis of a citizenry beggarly at the alphaαequals=0.05
level of acceptation with 20
degrees of freedom.
(b) Determine the critical value(s) for a left-tailed analysis of a citizenry beggarly at the alphaαequals=0.05
level of acceptation based on a sample admeasurement of nequals=15
(c) Determine the critical value(s) for a two-tailed analysis of a citizenry beggarly at the alphaαequals=0.01
level of acceptation based on a sample admeasurement of nequals=18
To analysis Upper H 0H0:
versus Upper H 1H1:
a simple accidental sample admeasurement of nequals=18
is acquired from a citizenry that is accepted to be commonly distributed. Answer parts(a)-(d).
Several years ago, the appear beggarly age of an bedfellow on afterlife row was 42.6 years. A sociologist wondered whether the beggarly age of a death-row bedfellow has afflicted back then. HeHe about selects 4141 death-row inmates and finds that their beggarly age is 40.8, with a accepted aberration of 10.5. Construct a90% aplomb breach about the beggarly age of afterlife row inmates. What does the interval imply?
Choose the actual hypotheses.
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