8bese individuals is that their body mass index is at least 30 [BMI = weight/(height), w. height is in meters and weight is in kilograms]. An article reported that in a sample of female workers, 263 had BMIS of than 25, 157 had BMIS that were at least 25 but less than 30, and 120 had BMIS exceeding 30. Is there compelling evidence for concluding that more than 20% of the individuals in the sampled population are obese? A USE SALT (a) State the appropriate hypotheses with a significance level of 0.05. O Ho: p = 0.20 H: p# 0.20 O Ho: p = 0.20 Ha: p < 0.20 O Ho: p > 0.20 H3: p = 0.20 O Ho: p = 0.20 H: p> 0.20 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P- value to four decimal places.) Z = P-value = What can you conclude? Do not reject the null hypothesis. There is not sufficient evidence that more than 20% of the population of female workers is obese. O Reject the null hypothesis. There is not sufficient evidence that more than 20% of the population of female workers is obese. Reject the null hypothesis. There is sufficient evidence that more than 20% of the population of female workers is obese. O Do not reject the null hypothesis. There is sufficient evidence that more than 20% of the population of female workers is obese. (b) Explain in the context of this scenario what constitutes type I error. O A type I error would be declaring that 20% or less of the population of female workers is obese, when in fact more than 20% are actually obese. O A type I error would be declaring that 20% or more of the population of female workers is obese, when in fact less than 20% are actually obese. OA type I error would be declaring that less than 20% of the population of female workers is obese, when in fact 20% or more are actually obese. O A type I error would be declaring that more than 20% of the population of female workers is obese, when in fact 20% or less are actually obese. Explain in the context of this scenario what constitutes type 1I error. A type II error would be declaring that 20% or less of the population of female workers is obese, when in fact more than 20% are actually obese. A type II error would be declaring that 20% or more of the population of female workers is obese, when in fact less than 20% are actually obese. O A type Il error would be declaring that less than 20% of the population of female workers Is obese, when in fact 20% or more are actually obese. OA type Il error would be declaring that more than 20% of the population of female workers is obese whan in fact 20% or less an

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A common characterization of obese individuals is that their body mass index is at least 30 [BMI = weight/(height), whe
height is in meters and weight is in kilograms]. An article reported that in a sample of female workers, 263 had BMIS of le
than 25, 157 had BMIS that were at least 25 but less than 30, and 120 had BMIS exceeding 30. Is there compelling
evidence for concluding that more than 20% of the individuals in the sampled population are obese?
A USE SALT
(a) State the appropriate hypotheses with a significance level of 0.05.
O Ho: p = 0.20
H3: p # 0.20
O Ho: P = 0.20
H3: p < 0.20
O Ho: p> 0.20
H: p = 0.20
Ho: p = 0.20
H: p > 0.20
Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-
value to four decimal places.)
Z =
P-value =
What can you conclude?
O Do not reject the null hypothesis. There is not sufficient evidence that more than 20% of the population of
female workers is obese.
O Reject the null hypothesis. There is not sufficient evidence that more than 20% of the population of female
workers is obese.
Reject the null hypothesis. There is sufficient evidence that more than 20% of the population of female
workers is obese.
O Do not reject the null hypothesis. There is sufficient evidence that more than 20% of the population of
female workers is obese.
(b) Explain in the context of this scenario what constitutes type I error.
O A type I error would be declaring that 20% or less of the population of female workers is obese, when in fact
more than 20% are actually obese.
O A type I error would be declaring that 20% or more of the population of female workers is obese, when in
fact less than 20% are actually obese.
O A type I error would be declaring that less than 20% of the population of female workers is obese, when in
fact 20% or more are actually obese.
O A type I error would be declaring that more than 20% of the population of female workers is obese, when in
fact 20% or less are actually obese.
Explain in the context of this scenario what constitutes type II error.
O A type II error would be declaring that 20% or less of the population of female workers is obese, when in
fact more than 20% are actually obese.
O A type II error would be declaring that 20% or more of the population of female workers is obese, when in
fact less than 20% are actually obese.
OA type II error would be declaring that less than 20% of the population of female workers Is obese, when in
fact 20% or more are actually obese.
O A type Il error would be declaring that more than 20% of the population of female workers is obese, when
in fact 20% or less are actually obese.
Transcribed Image Text:A common characterization of obese individuals is that their body mass index is at least 30 [BMI = weight/(height), whe height is in meters and weight is in kilograms]. An article reported that in a sample of female workers, 263 had BMIS of le than 25, 157 had BMIS that were at least 25 but less than 30, and 120 had BMIS exceeding 30. Is there compelling evidence for concluding that more than 20% of the individuals in the sampled population are obese? A USE SALT (a) State the appropriate hypotheses with a significance level of 0.05. O Ho: p = 0.20 H3: p # 0.20 O Ho: P = 0.20 H3: p < 0.20 O Ho: p> 0.20 H: p = 0.20 Ho: p = 0.20 H: p > 0.20 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P- value to four decimal places.) Z = P-value = What can you conclude? O Do not reject the null hypothesis. There is not sufficient evidence that more than 20% of the population of female workers is obese. O Reject the null hypothesis. There is not sufficient evidence that more than 20% of the population of female workers is obese. Reject the null hypothesis. There is sufficient evidence that more than 20% of the population of female workers is obese. O Do not reject the null hypothesis. There is sufficient evidence that more than 20% of the population of female workers is obese. (b) Explain in the context of this scenario what constitutes type I error. O A type I error would be declaring that 20% or less of the population of female workers is obese, when in fact more than 20% are actually obese. O A type I error would be declaring that 20% or more of the population of female workers is obese, when in fact less than 20% are actually obese. O A type I error would be declaring that less than 20% of the population of female workers is obese, when in fact 20% or more are actually obese. O A type I error would be declaring that more than 20% of the population of female workers is obese, when in fact 20% or less are actually obese. Explain in the context of this scenario what constitutes type II error. O A type II error would be declaring that 20% or less of the population of female workers is obese, when in fact more than 20% are actually obese. O A type II error would be declaring that 20% or more of the population of female workers is obese, when in fact less than 20% are actually obese. OA type II error would be declaring that less than 20% of the population of female workers Is obese, when in fact 20% or more are actually obese. O A type Il error would be declaring that more than 20% of the population of female workers is obese, when in fact 20% or less are actually obese.
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