In the past the standard deviation of weights of certain 32.0-oz packages filled by a machine was 0.25 oz. A random sample of 16 package showed a standard deviation of 0.36 oz. Is the apparent increase in variability significant at the 0.10 level of significance? Assume package weight is normally distributed. (a) State the appropriate null and alternative hypotheses. v 0.25 Ho: o ---Select--- Hạ: o ---Select--- v 0.25 (ii) Find x★. (Round your answer to two decimal places.) (iii) Find the p-value. (Give your answer bounds exactly.)

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In the past the standard deviation of weights of certain 32.0-oz packages filled by a machine was 0.25 oz. A random sample of 16 packages
showed a standard deviation of 0.36 oz. Is the apparent increase in variability significant at the 0.10 level of significance? Assume package
weight is normally distributed.
(a) State the appropriate null and alternative hypotheses.
Ho: o ---Select---
v 0.25
Ha: o ---Select---
v 0.25
(ii) Find x*. (Round your answer to two decimal places.)
(iii) Find the p-value. (Give your answer bounds exactly.)
< p <
(b) State the appropriate conclusion.
O Reject the null hypothesis. There is not significant evidence of an increase in variability.
Reject the null hypothesis. There is significant evidence of an increase in variability.
Fail to reject the null hypothesis. There is significant evidence of an increase in variability.
O Fail to reject the null hypothesis. There is not significant evidence of an increase in variability.
Consider the following hypothesis tests. (Give you
(a) Calculate the p-value for Ha: o2 * 20,
Transcribed Image Text:In the past the standard deviation of weights of certain 32.0-oz packages filled by a machine was 0.25 oz. A random sample of 16 packages showed a standard deviation of 0.36 oz. Is the apparent increase in variability significant at the 0.10 level of significance? Assume package weight is normally distributed. (a) State the appropriate null and alternative hypotheses. Ho: o ---Select--- v 0.25 Ha: o ---Select--- v 0.25 (ii) Find x*. (Round your answer to two decimal places.) (iii) Find the p-value. (Give your answer bounds exactly.) < p < (b) State the appropriate conclusion. O Reject the null hypothesis. There is not significant evidence of an increase in variability. Reject the null hypothesis. There is significant evidence of an increase in variability. Fail to reject the null hypothesis. There is significant evidence of an increase in variability. O Fail to reject the null hypothesis. There is not significant evidence of an increase in variability. Consider the following hypothesis tests. (Give you (a) Calculate the p-value for Ha: o2 * 20,
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