Answered step by step
Verified Expert Solution
Question
1 Approved Answer
Cadmium, a heavy metal, is toxic to animals. Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. A government set a safety
Cadmium, a heavy metal, is toxic to animals. Mushrooms, however, are able to absorb and accumulate cadmium at high concentrations. A government set a safety limit for cadmium in dry vegetables at 0.5 parts per million (ppm). The cadmium levels in a random sample of one species of edible mushroom are in the accompanying data set. At the 10% significance level, do the data provide sufficient evidence to conclude that the mean cadmium level in this species of mushroom is greater than the government's recommended limit of 0.5 ppm? Assume that the population standard deviation of cadmium levels in this species of mushroom is 0.43 ppm. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: The sum of the data is 7.29 ppm.) Click here to view the cadmium concentration data. - X State the hypothes Cadmium Concentration (ppm) Ho: H = 0.5 Ha : H > 10.5 0.74 0.66 0.78 0.55 0.15 1.13 (Type integers 0.62 0.31 0.72 0.51 0.25 0.87 Compute the value Z= (Round to two dec Print Done Determine the P-vaState the hypotheses for the one-mean z-test. Ho: H 0.5 ppm Ha : H > 0.5 ppm (Type integers or decimals. Do not round.) Compute the value of the test statistic. Z = (Round to two decimal places as needed.) Determine the P-value. P = (Round to three decimal places as needed.) the null hypothesis. At the 10% significance level, the data sufficient evidence to conclude that the mean cadmium level is the government's recommended limit
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started