Let the number of Chocolate chips in an oatmeal cookie have a Poisson distribution. We want the probability that a cookie of this type contains at least three chocolate chips to be greater than 0.96. Find the smallest value of the mean that the distribution can take. You may need a graphing calculator)
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- need help pleaseThe average final exam score for the statistics course is 74%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is lower. The final exam scores for the 12 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 51, 86, 77, 86, 66, 59, 66, 76, 55, 59, 57, 80 What can be concluded at the α = 0.10 level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion H0:H0: ? μ p Select an answer = ≠ > < H1:H1: ? p μ Select an answer = > < ≠ The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)I need help solving this question
- There are 100 students in a club. 20 are seniors. 12 arrive at December’s meeting at random. We want to predict the number of seniors that arrive. Describe the distribution and determine P(x=3).Identify the distribution, the parameters with values (i.e. n, p etc)and what is meant by a success. Then use the tables to answer the provided question(showing clearly how you did any necessary calculations). Q3. A local sports management company predicts that when the ticket Office first opens, a cashierservices on average 5 customers in the first 30 minutes. Using the tables(a) What is the probability that when the ticket Office first opens, the cashier services exactly5 customers in the first 30 minutes(b) What is the probability that when the ticket Office first opens, the cashier services 5 orless customers in the first 30 minutes(c) What is the probability that when the ticket Office first opens, the cashier services 5 ormore customers in the first 30 minutes(d) What is the probability that when the ticket Office first opens, the cashier services exactly8 customers in the first hour? minutesAn online instructor wants to estimate the mean amount of time that students spend in the online homework system on a particular homework assignment. The instructor takes a random sample of 30 students and looks up the amount of time recorded by the system for that assignment.
- The average final exam score for the statistics course is 74%. A professor wants to see if the average final exam score for students who are given colored pens on the first day of class is different. The final exam scores for the 14 randomly selected students who were given the colored pens are shown below. Assume that the distribution of the population is normal. 71, 72, 53, 61, 75, 55, 75, 74, 58, 50, 71, 84, 76, 53 What can be concluded at the the αα = 0.10 level of significance level of significance? The null and alternative hypotheses would be: H0: μ = ______________ H1: μ ≠ ______________ The test statistic t= ________________(please show your answer to 3 decimal places.) The p-value = _______________________ (Please show your answer to 4 decimal places.)Please help asapThe number of content changes to a Web site follows a Poisson distribution with a mean of 0.25 per day. What is the probability of two or more changes in a day? 0.026 0.287 0.267 None of the choices
- The accompanying histogram shows the lengths of hospital stays (in days) for all female patients admitted to a certain hospital during one year with a primary diagnosis of acute myocardial infarction (heart attack). Complete parts (a) through (c) below. a) From the histogram, determine whether the mean or median is larger. Explain. A. Because the distribution is nearly symmetric, the mean is expected to be larger than the median. B. Because the distribution is nearly symmetric, the mean is expected to be about the same as the median. C. Because the distribution is skewed to the high end, the mean is expected to be larger than the median. D. Because the distribution is skewed to the high end, the mean is expected to be smaller than the median. E. Because the distribution is skewed to the low end, the mean is expected to be larger than the median. F. Because the distribution is skewed to the low end, the mean is expected to be…If a graph represents a probability distribution, then the total area under the curve is what?