GreenBeam Ltd. claims that its compact fluorescent bulbs average more than 3.50 mg of mercury. A sample of 35 bulbs show

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GreenBeam Ltd. claims that its compact fluorescent bulbs average more than 3.50 mg of mercury. A sample of 35 bulbs show

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Greenbeam Ltd Claims That Its Compact Fluorescent Bulbs Average More Than 3 50 Mg Of Mercury A Sample Of 35 Bulbs Show 1
Greenbeam Ltd Claims That Its Compact Fluorescent Bulbs Average More Than 3 50 Mg Of Mercury A Sample Of 35 Bulbs Show 1 (34.83 KiB) Viewed 20 times
GreenBeam Ltd. claims that its compact fluorescent bulbs average more than 3.50 mg of mercury. A sample of 35 bulbs shows a mean of 3.59 mg of mercury. (a) Write the hypotheses for a right-tailed test, using GreenBeam's claim as the null hypothesis about the mean. (b) Assuming a known standard deviation of 0.18 mg, calculate the z test statistic to test the manufacturer's claim. (c) At the 1 percent level of significance (a = .01) does the sample exceed the manufacturer's claim?
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