Cadmium, a heavy​ metal, is toxic to animals.​ Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. Some governments have a safety limit for cadmium in dry vegetables at 1.3 parts per million​ (ppm). A hypothesis test is to be performed to decide whether the mean cadmium level in a certain mushroom is greater than the​ government's recommended limit. Complete parts​ (a) through​ (c) below. a. Determine the null hypothesis.   H0​: μ _____ (<, ≠, >, =) ___________ ppm ​(Type an integer or a decimal. Do not​ round.)   b. Determine the alternative hypothesis.   Ha​: μ _____ (<, ≠, >, =) ___________ ppm ​(Type an integer or a decimal. Do not​ round.)   c. Classify the hypothesis test as two​ tailed, left​ tailed, or right tailed.   The hypothesis test is __________ (left tailed, two tailed, right tailed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Cadmium, a heavy​ metal, is toxic to animals.​ Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. Some governments have a safety limit for cadmium in dry vegetables at 1.3 parts per million​ (ppm). A hypothesis test is to be performed to decide whether the mean cadmium level in a certain mushroom is greater than the​ government's recommended limit. Complete parts​ (a) through​ (c) below.

a. Determine the null hypothesis.
 
H0​: μ _____ (<, ≠, >, =) ___________ ppm
​(Type an integer or a decimal. Do not​ round.)
 
b. Determine the alternative hypothesis.
 
Ha​: μ _____ (<, ≠, >, =) ___________ ppm
​(Type an integer or a decimal. Do not​ round.)
 
c. Classify the hypothesis test as two​ tailed, left​ tailed, or right tailed.
 
The hypothesis test is __________ (left tailed, two tailed, right tailed.)
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