EBook Problems GLM Predict - Revision history

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← Older revision		Revision as of 18:02, 3 March 2020
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	* SOCR Home page: http://www.socr.ucla.edu		* SOCR Home page: http://www.socr.ucla.edu

−	{{translate\|pageName=http://wiki.~~stat~~.~~ucla~~.edu~~/socr~~/index.php/EBook_Problems_GLM_Predict}}	+	"{{translate\|pageName=http://wiki.socr.umich.edu/index.php/EBook_Problems_GLM_Predict}}

← Older revision		Revision as of 08:58, 8 January 2009
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	:''(e) Three percent of the population surveyed will change their minds.		:''(e) Three percent of the population surveyed will change their minds.
		+	{{hidden\|Answer\|(b)}}
		+
		+	===Problem 48===
		+	A 95 percent confidence interval of the form p_hat +/- E will be used to obtain an estimate for the unknown parameter population proportion p. If p_hat is the sample percent and E is the margin of error, which is the smallest sample size that will guarantee a margin of error of at most 0.08?
		+
		+	*Choose one answer.
		+
		+	:''(a) 250
		+
		+	:''(b) 175
		+
		+	:''(c) 100
		+
		+	:''(d) 625
		+
		+	:''(e) 25
	{{hidden\|Answer\|(b)}}		{{hidden\|Answer\|(b)}}

← Older revision		Revision as of 01:41, 8 January 2009
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	:''(e) 26.2% to 41.8%		:''(e) 26.2% to 41.8%
	{{hidden\|Answer\|(e)}}		{{hidden\|Answer\|(e)}}
		+
		+	===Problem 47===
		+	A survey was conducted at a movie theater to determine movie-goers' preference for different popcorn. The results of the survey show that Brand A was preferred by 65% of the people with a margin of error of plus or minus 3 percent. What does the statement "plus or minus three percent" mean?
		+
		+	*Choose one answer.
		+
		+	:''(a) The true proportion of the population who preferred Brand A popcorn could be determined is 3 percent more of the population was surveyed.
		+
		+	:''(b) B. It would be unlikely to get the observed population of 65% unless the actual percentage of people who preferred Brand A is between 62 and 68 percent.
		+
		+	:''(c) Three percent of the population was surveyed.
		+
		+	:''(d) Three percent of the surveys are not accurate.
		+
		+	:''(e) Three percent of the population surveyed will change their minds.
		+	{{hidden\|Answer\|(b)}}

← Older revision		Revision as of 05:45, 4 January 2009
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	:''(b) False		:''(b) False
	{{hidden\|Answer\|(a)}}		{{hidden\|Answer\|(a)}}
		+
		+	===Problem 46===
		+	A survey was conducted to determine what percent of college seniors would chose to attend a different college if they knew what they know now. In a random sample of 100 seniors, 34% indicated that they would attend a different college. Determine the 90 percent confidence interval for the proportion of seniors who would attend a different college.
		+
		+	*Choose one answer.
		+
		+	:''(a) 25.8% to 42.2%
		+
		+	:''(b) 24.7% to 43.3%
		+
		+	:''(c) 30.6% to 37.4%
		+
		+	:''(d) 31.25% to 36.8%
		+
		+	:''(e) 26.2% to 41.8%
		+	{{hidden\|Answer\|(e)}}

← Older revision		Revision as of 20:54, 2 December 2008
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	:''(f) 66 - 70		:''(f) 66 - 70
	{{hidden\|Answer\|(e)}}		{{hidden\|Answer\|(e)}}
		+
		+	===Problem 44===
		+	Suppose that you want to estimate the percentage of the UCLA undergraduates who belong to a gym. You ask a random sample of 200 students and 120 say that they belong to a gym. What is the 90% CI?
		+
		+	*Choose one answer.
		+
		+	:''(a) 51.23% to 68.76%
		+
		+	:''(b) 56.5% to 63.5%
		+
		+	:''(c) 58.04% to 65.70%
		+
		+	:''(d) 55.52% to 64.47%
		+	{{hidden\|Answer\|(d)}}
		+
		+	===Problem 45===
		+	The Daily Prophet, the most widely read newspaper in England's wizarding community, publishes a survey reporting that a 95% confidence interval for the proportion of wizards who favor the death sentence for Lord Voltemort is (.98, .99).
		+
		+	True or False: If we repeat the survey multiple times, then our confidence interval will capture the true proportion of people who favors the death sentence for Lord Voltemort 95% of the times.
		+
		+	*Choose one answer.
		+
		+	:''(a) True
		+
		+	:''(b) False
		+	{{hidden\|Answer\|(a)}}

@@ Line 651: / Line 651: @@
 :''(d) Based on the p-value given above males and females are not similar with respect to their opinions and the CI should not be expected to capture zero.
 {{hidden|Answer|(d)}}
 <hr>
 * [[EBook | Back to Ebook]]

@@ Line 652: / Line 652: @@
 {{hidden|Answer|(d)}}
 <hr>
-* [[AP_Statistics_Curriculum_2007_GLM_Predict | Back to Ebook]]
+* [[EBook | Back to Ebook]]
 * SOCR Home page: http://www.socr.ucla.edu
 {{translate|pageName=http://wiki.stat.ucla.edu/socr/index.php/EBook_Problems_GLM_Predict}}

@@ Line 637: / Line 637: @@
 :''(d) False, the confidence interval for the sample proportion should be smaller than that.
 {{hidden|Answer|(a)}}
 <hr>
 * [[AP_Statistics_Curriculum_2007_GLM_Predict | Back to Ebook]]
 * SOCR Home page: http://www.socr.ucla.edu
-{{translate|pageName=http://wiki.stat.ucla.edu/socr/index.php?title=EBook_Problems_GLM_Predict}}
+{{translate|pageName=http://wiki.stat.ucla.edu/socr/index.php/EBook_Problems_GLM_Predict}}

@@ Line 524: / Line 524: @@
 :''(d) The confidence interval is 5.8 - 4.2 = 1.6
 {{hidden|Answer|(c)}}
 <hr>
 * [[AP_Statistics_Curriculum_2007_GLM_Predict | Back to Ebook]]