Dole Food Company, Inc., is the world's largest producer and marketer of fresh fruit and vegetables. Dole grows and sources from independent growers and transports bananas grown primarily in Colombia, Costa Rica, Ecuador, Guatemala and Honduras for markets principally in North America, Europe, the Mediterranean and selected Asian markets. A Dole inspector took a random sample of crates of bananas prior to shipment. The weights of the crates sampled, in pounds, are as follows: 24.95, 25.15, 25.32, 23.88, 26.16, 25.09, 24.96, 25.48, 24.75, and 24.76. The population of banana weights are assumed to be
Answer: ≤ (Click to select) p x-bar μ s n σ π ≤ pounds
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- Using the same anti-venom study, answer the following questions. A study was done on children (6 months to 18 years of age) who had (nonlethal) scorpion stings. Researchers wanted to know the effectiveness of a new anti-venonm. Each child was randomly assigned to receive a shot of the anti-venom or a placebo shot. Researchers recorded whether or not their condition improved over the next four hours. a. Identify the population for the study. b. Identify the sample for the study. (HINT: See #1) c. Was this an observational study or a controlled experiment? Explain how you know. d. Assuming the rest of the study was well-designed, use your answers to discuss whether it would be reasonable to conclude that the new anti-venom is effective at treating nonlethal scorpion stings in children. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). TTTTParagraph Arial 3 (12pt) 三,三,T. 回i:公 E=E= = T T, U HTML CSS O Mashupsarrow_forwardd. Check that calculating appropriate weighted average of your answers in parts b and c gives the answer you found in part aarrow_forwardA farm grows normally distributed potatoes and is testing a new crop. After 4 months, 20 plants produce potatoes with the following weights (in kg):7, 1.4, 1.4, 1.3, 0.3, 1.4, 0.6, 1.3, 1.3, 1.1, 0.9, 1.5, 1.1, 1.5, 0.6, 1.4, 1.1, 0.5, 0.6, 0.8 a) Find out the mean and standard deviation of the sample.arrow_forward
- The data that appears below are the weights (in pounds) of 15 packages of ground beef in Supermax supermarket refrigerators: 1.28, .90, 1.29, 1.15, .93, 1.18, .89, 1.12, 2.33, 1.94, 2.14, 2.6, 1.11, 1.9, 1.2 (Mendenhall et al., 2015).a) Construct a stem-and-leaf plot to show the distribution of these weights.b) Find the mean and standard deviation of the data set.arrow_forwardIn order to gauge public opinion about how to handle Iran's growing nuclear program, a research group surveyed 996 American men by telephone and asked them to rate the threat Iran's nuclear program poses to the world on a scale of 1 to 10. Describe the population, sample, population parameters, and sample statistics Identify the population in the given problem. Choose the correct answer below. O A. The 996 American men surveyed by telephone O B. Half of all American men O C. All American men O D. Some of the 996 American men surveyed by telephone Identify the sample for the given problem. Choose the correct answer below. O A. Half of all American men O B. The 996 American men surveyed by telephone C. All American men O D. Some of the 996 American men surveyed by telephone Identify the population parameter in the given study. Choose the correct answer below. O A. The mean threat rating of all American men on Iran's nuclear program O B. The mean threat rating on Iran's nuclear program of…arrow_forward6.34 Barking deer. Microhabitat factors associated with forage and bed sites of barking deer in Hainan Island, China were examined. In this region woods make up 4.8% of the land, cultivated grass plot makes up 14.7%, and deciduous forests make up 39.6%. Of the 426 sites where the deer forage, 4 were categorized as woods, 16 as cultivated grassplot, and 61 as deciduous forests. The table below summarizes these data.39 Woods Cultivated grassplot Deciduous forests Other Total 4 16 61 345 426 (a) Write the hypotheses for testing if barking deer prefer to forage in cer- tain habitats over others. (b) What type of test can we use to answer this research question? (c) Check if the assumptions and conditions required for this test are sat- isfied. (d) Do these data provide convincing evidence that barking deer prefer to forage in certain habitats over others? Conduct an appropriate hypoth- esis test to answer this research question. Photo by Shrikant Rao (http://flic.kr/p/4Xjdkk) CC BY 2.0…arrow_forward
- Student Activity: Using MS Excel Directions: Study the following situation and do the task. Then answer the following questions or supply the missing information. Submission: Upload the MS EXCEL sheet with the completed interpretation of results. Mr. Santiago's company sells bottled coconut juice. He claims that a bottle contains 500 ml of such juice. A consumer group wanted to know if his claim is true. They took six random samples of 10 such bottles and obtained the capacity, in ml, of each bottle. The result is shown as follows: Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 Sample 6 500 500 497 501 502 496 498 500 497 495 497 497 497 495 502 500 497 496 503 494 496 497 499 495 499 498 497 497 496 497 497 500 497 500 497 497 497 500 497 500 497 500 497 500 497 495 499 500 497 500 497 497 500 496 495 497 495 497 500 497 Assuming that the measurements were carefully obtained and that the only kind of error present is the sampling error, what is the point…arrow_forwardSolvearrow_forwardA state fisheries commission wants to estimate the number of bass caught in a given lake during a season in order to restock the lake with the appropriate number of young fish. The commission could get a fairly accurate assessment of the seasonal catch by extensive “netting sweeps" of the lake before and after a season, but this technique is much too expensive to be done routinely. Therefore, the commission samples a number of lakes and record the seasonal catch (thousands of bass per square mile of lake area) and size of lake (square miles). A simple linear regression was performed and the following R output obtained. Estimate Std. Error t value Pr(>|t|) (Intercept) 2.5463 0.4427 5.7513 0.0000 size 0.0667 0.3672 0.1818 0.8578 If a scatterplot showed a non-linear relationship between the response and explanatory variables, what should be done? O Nothing. Continue the analysis as is. Stop the analysis. Perform a natural log transformation on the response variable first. O Perform a…arrow_forward
- Several methods of estimating the number of seeds in soil samples have been developed by ecologists. An article gave the accompanying data on the number of seeds detected by the direct method and by the stratified method for 27 soil specimens. Specimen Direct Stratified 1 21 7 2 34 38 3 0 7 4 60 58 5 20 54 6 61 61 7 40 27 8 7 7 9 14 7 10 94 100 11 1 0 12 67 58 13 78 67 14 21 54 Specimen Direct Stratified 15 34 27 16 0 0 17 38 38 18 18 14 19 94 94 20 1 14 21 40 47 22 21 21 23 0 0 24 7 14 25 14 40 26 18 14 27 40 78 Do the data provide sufficient evidence to conclude that the mean number of seeds detected differs for the two methods? Test the relevant hypotheses using ? = 0.05. (Use ?direct − ?stratified.) Find the test statistic. (Round your answer to two decimal places.) t = Find the df. (Round your answer down to the nearest whole number.) df = Use technology to find the P-value. (Round your answer to four…arrow_forwardA local West Lafayette commercial bank issues Mastercard credit cards. As a part of its annual review of the profitability of each type of credit card, the bank randomly samples 36 customers to measure the average annual charges per card. A random sample of 36 Mastercard accounts shows the following annual spending per account (in USD): 2869 3770 2854 2750 2574 2972 2549 3267 3013 2707 2794 1189 2230 2178 3032 3485 2679 2010 1994 2768 3853 2064 3244 2738 2807 2395 3405 3006 3368 2691 1996 3008 2518 2674 2730 3719 1. Based on these randomly sampled accounts, what is the best point estimate of the true mean annual spending for Mastercard account holders? 2. Develop a 95% confidence interval estimate of the mean annual spending. Interpret this range. 3. To encourage more use of the card, the company offers a promotion that costs the bank $5 for each card that carries a balance of $3,000 or more. If the bank has 50,000 total customers, what can be stated about the cost of this…arrow_forwardPlease answer, Thank you!arrow_forward
- A First Course in Probability (10th Edition)ProbabilityISBN:9780134753119Author:Sheldon RossPublisher:PEARSON