34. Information from the American Institute of Insurance indicates the mean amount of life insurance per household in the United States is $110‚000. This distribution follows the normal distribution with a standard deviation of $40‚000. a. If we select a random sample of 50 households‚ what is the standard error of the mean? b. What is the expected shape of the distribution of the sample mean? c. What is the likelihood of selecting a sample with a mean of at least $112‚000? d. What is the likelihood
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Solving Proportions MATT222 Intermediate Algebra A comparison of two numbers is referred to as a ratio‚ similar to fractions that can be reduced to lowest terms and then converted into a ratio of integers. Ratios allow one to compare sizes of two quantities and unit measurements. Any statement expressing the equality of two ratios is known as a proportion‚ which is used in numerous formulas in today’s real world settings and applications. Using proportions is an effective
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How to describe and use climatic graphs All three areas have the maximum temperature in July; England’s maximum temperature is 20 degrees. Norway’s is 16 degrees and Siberia is 24 degrees. The difference between highest and lowest is only 8 degrees. All three areas also have the minimum temperature in January. England’s is 0 degrees‚ Norway’s is -6 and Siberia’s is -51. The difference from highest to lowest for minimum temperature is 51 degrees. Both England and Norway have a difference of 20
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Solving Proportions MAT 222 Instructor: Dr. Stacie Williams Solving Proportions Bear population. To estimate the size of the bear population on the Keweenaw Peninsula‚ conservationists captured‚ tagged‚ and released 50 bears. One year later‚ a random sample of 100 bears included only 2 tagged bears. What is the conservationist’s estimate of the size of the bear population? Let’s make "x" the number of the total bear population. The ratio of originally tagged bears to the whole population
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obligated to use plus sized models in their campaigns. Do you agree? Women these days are constantly bombarded with advertisements and campaigns telling them what they should wear‚ what they should eat and how they should portray themselves. It has become a race to try and achieve a size zero look because women feel as if it has become the new norm. That is why‚ I believe the fashion industry should be obliged to use plus size model. A plus size model is a model who is a US size 8 or above. Even
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Graphs are often used to deliver a visual and compelling case in many applications and businesses. Graphs are the information delivery vehicle of choice for many numerical data applications. With graphs a lot of information can be condensed into a visually descriptive object. They reduce the amount of time that would have been expended in reading or parsing through a lot of information. On the other hand‚ they can also be easily used to misrepresent or skew interpretation towards a favorable
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Use of Newspapers by Nigerian University Students Introduction Newspapers provide up-to-date information on local‚ state/ provincial‚ national‚ and world issues. They are among the most widely-read periodicals that are available and accessible to the vast majority of people of all ages and walks of life in any community. Every category of reader can find some important‚ current‚ and interesting information in newspapers. Today ’s newspapers use design elements that make information easily accessible
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Example Newspaper editorial: What Questions Should I Ask My Pharmacist? Pharmacists have consistently ranked among the most highly respected professionals in the country. According to a December 2007 USA Today/Gallup poll‚ pharmacists rank third as the nation’s most trustworthy professionals behind nurses and grade-school teachers. They are ranked ahead of military officers and medical doctors. Pharmacists are the best source for information about your medications. Below are questions you
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his budget will go to his foods with 45% of his total allowance. Next is for lodging with 30% followed by the projects and fare which will have 10%. The least designation for his budget will be for his savings which has 5% only. 2. BAR GRAPH The bar graph shows the yearly tourist count for the provinces of region V. the province of Albay got the highest number of tourist with 450 000. It is followed by the provinces of Camarines Sur and Camarines Norte with 400 000 and 350 000 respectively.
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estimate the proportion of X-ray machines that malfunction and produce excess radiation. A random sample of 40 machines is taken and 12 of the machines malfunction. The problem is to compute the 95% confidence interval on π‚ the proportion that malfunction in the population. Solution: The value of p is 12/40 = 0.30. The estimated value of σp is = 0.072. A z table can be used to determine that the z for a 95% confidence interval is 1.96. The limits of the confidence interval are therefore:
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