what z value would make you reject the null hypothesis u=52 at a 90% confidence level when the alternative hypothesis is u<52 ?
Q: Let X and Y be two possible events with P(X) = 0.3 and P(Y) = 0.20 respectively. Assume that events…
A: The two probability values are P(X) =0.3 and P(Y)=0.20
Q: Tryouts are being conducted for a baseball team. a. in how many ways can a coaching staff of 5 be…
A: a. There is total 15 applicants.
Q: An instructor finds that there is a tendency for students who send more text messages during class…
A: Correlation coefficient : it denotes by r Value of correlation coefficient define strength of…
Q: Below are four bivariate data sets and their scatter plots. (Note that all of the scatter plots are…
A: The scatterplots for four data sets are given.
Q: Explain how biostatistics and your knowledge of biostatistics might inform how you address the…
A: A person is working for a foreign government that has had a disease epidemic in a certain region of…
Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…
A: Here the given information The National Longitudinal Study of Adolescent Health interviewed several…
Q: A research firm supplies manufacturers with estimates of the sales of their products from samples of…
A: x¯1=41, s1=11, n1=50x¯2=38, s2=13, n2=52α=0.05
Q: c) Identify the outlier from the table in question 3 (state the values). d) Calculate the equation…
A: Tips Experience 145 5 120 1 112 0.5 173 7 68 4 100 2
Q: What is the number of 5-card hands containing all hearts? 1287 51 891 840 a. 40 b. 154 440 C. d.
A: Total number of cards in a deck=52 Total number of cards with a heart=13 Note:“Since you have…
Q: Use the normal distribution and the given sample results to complete the test of the given…
A: H0: p = 0.5Ha : p >0.5n = 75p^ = 0.60α = 0.05
Q: 3. For 474 employees, the gender and the variable WagesBin was measured (1=lowest income group until…
A: From the given data, the two variables involved in the cross table are: gender and wages Gender…
Q: Consider the following time series data. Week 1 2 3 4 5 6 Value 18 13 15 13 15 15 (a)…
A: From the given information, Week Value 1 18 2 13 3 15 4 13 5 15…
Q: Mrs. Nash is coordinating transportation for a school field trip. She needs to determine b, the…
A: Total number of students = 200 Number of students each bus can take = 46
Q: Determine which type of sampling technique is used. Determine if the sample is biased or unbiased. A…
A: A high school teacher wants to know how much time her students spend on their cell phones each…
Q: Suppose you want to check whether a coin is fair or not. You flip the coin 100 times and get 41…
A: From the provided information, We flip the coin 100 times that is n = 100 and get 41 tails, so…
Q: If the population standard deviation of a normal distribution is 1.8, then find the standard…
A: Answer: From the given data, number of observations(n) = 64 Population standard deviation(σ) = 1.8
Q: adults, 45% indicated that movies were getting better whereas 43% indicated that movies were getting…
A: Sample size = 800 Sample proportion= 0.45
Q: Would you expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or…
A: Consider the given variables: Amount of cash taken in by retail cashiers during a two-hour shift…
Q: 2. Based on data collected by the National Center for Health Statistics, an estimate of the…
A: Answer: From the given data, The estimate of percentage of adults who have at some point in their…
Q: ing to a study of political prisoners, the mean duration of imprisonment for 34 prisoners with…
A: We have given that, n = 34 , x̄ = 34.9 and σ = 42
Q: Which of the following would be a correct interpretation of an 87% confidence interval for the true…
A: Solution: Confidence interval: Confidence interval is the range of values which contains the true…
Q: what is the probability that exactly one is a shutout?
A: The number of runs scored by a certain baseball team per game follows a Poisson distribution with A…
Q: Write the coordinates of a point that would be an outlier on the following graph. 20 15 10 5 0 0 5 O…
A: Scatter plot is given : We can say by seeing scatter plot : It shows positive relationship between…
Q: A student organization surveyed both current students and recent graduates to obtain information on…
A: The data is given as- Professor Current students Recent graduates 1 4 6 2 6 8 3 8 5 4…
Q: ) Perform the F test at the 1% level, making sure to state the null and alternative hypotheses. f)…
A: Here dependent variable is the prices of houses. The independent variables are no. of bedrooms,…
Q: An important issue is whether there are racial differences in hypertension among children. We define…
A: From the given table, we have the regression coefficient of Hispanic boys with a Caucasian base is,…
Q: 3. Using logic to compare samples with different sources of variation Two hypothetical outcomes for…
A: It is required to compare the between-treatments and between-subjects variances of Outcome A and…
Q: The quarterly returns for a group of 51 mutual funds with a mean of 1.5% and a standard deviation of…
A: Mean(µ) = 0.015Standard deviations (σ) = 0.053
Q: d. What is the probability that no more than 7 of the 15 students in your sample say that they have…
A: d. The given sample size is 15 and probability of success 0.25.
Q: is ,,C, related to P2 Pr r! a. „C, = b. „C, = P,x(n-r)! 2. Which situation requires a. Sela best…
A: According to the given information, we have Combination and permutation is given.
Q: You have these 3 histograms: Histogram of Residuals: X-axis: Residual values (deviation between…
A: Student's t-distribution: When a sample of size 'n' is selected from normal distribution, the…
Q: Suppose certain coins have weights that are normally distributed with a mean of 5.101 g and a…
A: Given,mean(μ)=5.101standard deviation (σ)=0.052
Q: A vacuum salesman closes on a sale 19% of the time he gives his sales pitch. He has 4 presentations…
A: n=sample size=4 ,p=19%
Q: An epidemiologist wants to estimate the proportion of residents in her city that carry the Hepatatis…
A:
Q: Stewart Fleishman specializes in the psychiatric aspects of symptom management in cancer patients.…
A: Patient Depression (x) Pain (Y) A 1 5 B 3 0.75 C 5 7 D 7 2.75 E 9 9
Q: In a normal distribution, find the mean when standard deviation is 6 and 3.75% of the area lies to…
A: From the provided information, Standard deviation (σ) = 6 3.75% of the area lies to the left of 85.…
Q: Suppose that 10% of the population of the U.S. is left-handed. If a random sample of 140 people from…
A: Answer: From the given data, sample size(n) = 140 p = 10% =0.10
Q: Scientists tested each in a sample of 6 alleles of antigen-produced protein for level of peptide.…
A: The sample size n=6 The sample mean x¯=1.54 The sample standard deviation s=0.13 The confidence…
Q: Assume that weights of adult females are normally distributed with a mean of 77 kg and a standard…
A: Population mean, µ = 77 kg Population standard deviation, σ = 22 kg Let, X be the weights of adult…
Q: When is there a risk of a Type II error? a. The risk of a Type II error is independent from the…
A: Given that When is there a risk of a Type II error?
Q: charge rates for annual tutoring services has a standard deviation of $1000, what is the probability…
A: Standard deviation=1000, Sample size=300
Q: A standardized exam's scores are normally distributed. In a recent year, the mean test score was…
A: normal distributionμ = 1490σ = 312
Q: United Dairies, Inc., supplies milk to several independent grocers throughout Dade County, Florida.…
A: It is of interest to use an exponential smoothing with α = 0.7 to find the forecast of demand…
Q: Find the exact area of the region associated with the following (using excel formula or Z table) P(Z…
A: standard normal distribution Z~N(0,1) P(z>-0.55) = ?
Q: A study investigated ways to prevent staph infections in surgery patients. The researchers examined…
A: From the provided information, Sample size (n) = 100 From which 88 patients tested positive for…
Q: 5. A set of flags will be flown along the front of a used car lot. Four are red, three are green,…
A:
Q: Y Hotpot stoves use a standard oven insulation. To test its effectiveness they take random samples…
A: One type of non-parametric test is the Mann-Whitney U test. When there exist two samples which are…
Q: Determine the estimated regression equation that can be used to predict the overall score given the…
A: Given is the data on scores each ship received based upon the results from Condé Nast Traveller's…
Q: Suppose the fuel efficiency, in miles per gallon, of a certain model of car is normally distributed.…
A:
Q: A researcher wanted to see if different breeds of dogs preferred toys of certain colors. The…
A: The observed and expected counts are, Yellow Purple Black Total Beagle 16 24 30 23 14 13…
what z value would make you reject the null hypothesis u=52 at a 90% confidence level when the alternative hypothesis is u<52 ?
Step by step
Solved in 3 steps with 1 images
