Homework Help is Here – Start Your Trial Now!
Math
Statistics
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 5% 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 0.34 ppm. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: The sum of the data is 7.75 ppm.) Click here to view the cadmium concentration data. Click here to view Page 1 of the table of areas under the standard normal curve, Click here to view Page 2 of the table of areas under the standard normal curve. Cadmium concentration (ppm) State the hypotheses for the one-mean z-test. 0.81 0.33 0.56 0.51 0.64 1.15 D Ho: H ppm 0.74 0.63 0.62 0.38 0.89 0.49 ppm (Type integers or decimals. Do not round.) Compute the value of the test statistic. Print Done (Round to two decimal places as needed.)

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 5% 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 0.34 ppm. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: The sum of the data is 7.75 ppm.) Click here to view the cadmium concentration data. Click here to view Page 1 of the table of areas under the standard normal curve, Click here to view Page 2 of the table of areas under the standard normal curve. Cadmium concentration (ppm) State the hypotheses for the one-mean z-test. 0.81 0.33 0.56 0.51 0.64 1.15 D Ho: H ppm 0.74 0.63 0.62 0.38 0.89 0.49 ppm (Type integers or decimals. Do not round.) Compute the value of the test statistic. Print Done (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

Please solve all parts of the question correctly.

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 5% significance level, do the data provide sufficient evidence to conclude that the mean cadmium level in this species of mushroom 0.34 ppm. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: The sum of the data is 7.75 ppm.) Click here to view the cadmium concentration data. Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. 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 Cadmium concentration (ppm) ..... (Round to two decimal places as needed.) 0.81 0.33 0.56 0.51 0.64 1.15 0.74 0.63 0.62 0.38 0.89 0.49 Determine the critical value(s). Select the correct choice below and fill in the answer box within your choice. (Round to two decimal places as needed.) O A. The critical value is z, = O B. The critical values are ±Z«/2 Print Done = + O C. The critical value is - Zq = the null hypothesis. At the 5% significance level, the data sufficient evidence to conclude that the mean cadmium level is the government's recommended limit.
Transcribed Image Text: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 5% significance level, do the data provide sufficient evidence to conclude that the mean cadmium level in this species of mushroom 0.34 ppm. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: The sum of the data is 7.75 ppm.) Click here to view the cadmium concentration data. Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. 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 Cadmium concentration (ppm) ..... (Round to two decimal places as needed.) 0.81 0.33 0.56 0.51 0.64 1.15 0.74 0.63 0.62 0.38 0.89 0.49 Determine the critical value(s). Select the correct choice below and fill in the answer box within your choice. (Round to two decimal places as needed.) O A. The critical value is z, = O B. The critical values are ±Z«/2 Print Done = + O C. The critical value is - Zq = the null hypothesis. At the 5% significance level, the data sufficient evidence to conclude that the mean cadmium level is the government's recommended limit.
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 5% 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 0.34 ppm. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: The sum of the data is 7Z75 ppm.) Click here to view the cadmium concentration data. Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. Cadmium concentration (ppm) State the hypotheses for the one-mean z-test. 0.81 0.33 0.56 0.51 0.64 1.15 Но ppm 0.74 0.63 0.62 0.38 0.89 0.49 Ha: H (Type integers or decimals. Do not round.) ppm Compute the value of the test statistic. Print Done Z= (Round to two decimal places as needed.)
Transcribed Image Text: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 5% 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 0.34 ppm. Preliminary data analyses indicate that applying the z-test is reasonable. (Note: The sum of the data is 7Z75 ppm.) Click here to view the cadmium concentration data. Click here to view Page 1 of the table of areas under the standard normal curve. Click here to view Page 2 of the table of areas under the standard normal curve. Cadmium concentration (ppm) State the hypotheses for the one-mean z-test. 0.81 0.33 0.56 0.51 0.64 1.15 Но ppm 0.74 0.63 0.62 0.38 0.89 0.49 Ha: H (Type integers or decimals. Do not round.) ppm Compute the value of the test statistic. Print Done Z= (Round to two decimal places as needed.)
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS