Statistics question and answers for January 15, 2024
- Q DDT is a pesticide banned in the United States for its danger to humans and animals In an experiment on the impact of DDT six rats were exposed to DDT...
- Q You are evaluating the effectiveness of improvements your company has made to a new mobile app The 95 confidence interval for the difference between the proportion of users who prefer...
- Q A veterinary study of horses looked at the type of housing provided for the horse and the type of bedding Bedding was classified as shavings or rubber mats and housing...
- Q In the United States there has historically been a strong relationship between smoking and education with well educated people less likely to smoke To examine whether this pattern has changed...
- Q In 1965 about 44 of the U S adult population had never smoked cigarettes A national health survey of 1472 U S adults presumably selected randomly during 2010 revealed that...
- Q t a large university an SRS of 25 male faculty members included 10 men who felt that the university was upportive of female and minority faculty An SRS of 20...
- Q The law of large numbers states that as the number of observations drawn at random from a population with proportion p increases the proportion of the observed values p O...
- Q Which scenario is an example of a matched pairs design O A A teacher compares the scores of students using a computer based method of instruction with the scores of...
- Q In many fast food restaurants there is a strong correlation between a menu item s fat content measured in grams and its calorie content We want to investigate this relationship...
- Q The Excite Poll is an online poll at poll excite com You click on an answer to become part of the sample One poll question was Do you prefer watching...
- Q A local politician claims that one in five automobile accidents involve a teenaged driver He is advocating increasing the age at which teenagers can drive alone Over a two month...
- Q A company produces precision 1 meter 1000 mm rulers The actual distribution of lengths of the rulers produced by this company is Normal with mean and standard deviation o 0...
- Q A group of veterinary researchers plan a study to estimate the average number of enteroliths in horses suffering from them The number of enteroliths is determined by surgery or ultrasound...
- Q Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and a standard deviation of 16...
- Q The time in number of days until maturity of a certain variety of tomato plant is Normally distributed with mean and standard deviation o 2 4 I select a simple...
- Q In a test of statistical hypotheses the P value tells us O A if the null hypothesis is true O B the smallest level of significance at which the null...
- Q Every year the veterinary hospital at a major research university treats a number of horses that have stones called enteroliths in their guts A sample of 20 years shows that...
- Q The Survey of Study Habits and Attitudes SSHA is a psychological test that measures the motivation attitudes and study habits of college students Scores range from 0 to 200 and...
- Q Consider the following scatterplot which depicts the tread depth measured in mils where 1 mil 0 001 inch versus the number of miles driven on the tire measured in thousands...
- Q One hundred sixty people who suffer from painful diabetic neuropathy have volunteered to participate in a study Eighty are selected at random and are given the drug gabapentin which although...
- Q Running times for 400 meters are Normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and a standard deviation of 16...
- Q Enteroliths are calcifications that form in the gut of a horse The stones can cause considerable morbidity a mortality A study was conducted to investigate factors such as diet and...
- Q Compute and use the least squares regression line of orc attacks on spider attacks Compute m five places after the decimal Compute b five places after the decimal For a...
- Q 2 3 5 P6 7 8 beoco on a State the null hypothesis Ho and the alternate hypothesis H HO H 0 b Determine the type of test statistic to...
- Q An automobile manufacturer finds that 1 in every 2000 automobiles produced has a particular manufacturing defect a Use a binomial distribution to find the probability of finding 4 cars with...
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