Question

For the following hypothesis test, determine the null and alternative hypotheses. Also, classify the hypothesis test as two tailed, left tailed, or right tailed The mean local monthly bill for cell phone users in this country was $43.56 in 2001. A hypothesis test is to be performed to determine whether last year's mean local monthly bill for cell phone users has decreased from the 2001 mean of $43.56 Choose the correct null and alternative hypotheses below OA. Ho : μ = $43.56 Ha : μ $43.56 ○ D. Ho: μ#543.56 Ha : μ < $43.56 OB. H0: μ = $43.56 Ha H> $43.56 OE. Ho : #543.56 Ha: H > $43.56 ○ C. Ho : μ= $43.56 Ha : μ < $43.56 HOP#543.56 На: -343.56 ○ F. Which of the following is the correct classification of the hypothesis test? O A. Two tailed B. Left tailed O C. Right tailed

Answer 1

Null hypothesis:

$H_0: \mu = \$ 43.56$

Alternative hypothesis:

$H_a: \mu < \$ 43.56$

Hence, option C is correct choice

From the above testing of hypothesis

The give test is one side and left tailed

Option B is correct choice