Table 1. Weight (g) of harvested fruits of tomato Block II III Total Mean T1 2.33 2.17 3.95 T2 2.65 2.60 T3 2.99 2.09 2.31 T4 2.98 1.92 2.06 T5 2.49 3.47 4.03 Total 2.70 2.46 2.99 Mean Grand Mean 4. How many blocks/replications) are involved in this table? 5. This table is an example of treatment with equal or unequal? 6. How many treatments are involved in this table?
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- A machine is set to fill a small bottle with 9.0 grams of medicine, A sample of eight bottles revealed the following amounts (grams) in each bottle. 9.2 8.7 8.9 8.6 8.8 8.5 8.7 9.0 At the .01 significance level, can we conclude that the mean weight is less than 9.0 grams? How many degress of freedom are there?Consider two sets of data, X and Y, with n = 10 observations each. If the mean ranks for X and Y are 6 and 5, respectively, what is the test statistic for the Wilcoxon Signed-Ranks test on these two sets of data?When companies are designing a new product, one of the steps typically taken is to see how potential buyers react to a picture or prototype of the proposed product. The product-development team for a notebook computer company has shown picture A to a large sample of potential buyers and picture B to another, asking each person to indicate what they "would expect to pay" for such a product. The data resulting from the two pictures are provided in file (sheet 6). Using the 0.05 level of significance, determine whether the prototypes might not really differ in terms of the price that potential buyers would expect to pay. Sheet 6 ComputerA ComputerB 3 317 2 965 2 680 3 083 3 286 3 137 2 859 2 950 2 693 3 161 2 945 2 918 2 908 3 158 3 193 3 082 3 240 2 903 3 040 3 103…
- The prime Minister of a small Caribbean Island stated that 95% of the population wasvaccinated from the Covid-19 virus. The opposition believes that the Minister is overstatingthe proportion of vaccinated citizens. He randomly selects 300 citizens and found that 240of them were fully vaccinated. a) The following data shows the number of hours slept by a patient in 1 weeks12 18 09 16 11 10 08i. Calculate the unbiased estimate for the population mean ii. Calculate the unbiased estimate for the population standard deviation iii. Calculate a 95% confidence interval for the mean number of hoursThe world's smallest mammal is the bumblebee bat. Shown below are weights (in grams) from a sample of those bats: 1.68 1.51 1.44 1.98 2.21 1.58 1.58 1.72 1.41 1.69 2.14 1.33 1.53 1.55 1.57 Use the traditional method and a significance level of .05 to test the claim that these bats come from the same population having a mean weight equal to 1.8 gA scientist selected a random sample of seven varieties of peach ice cream to investigate the relationship between the density, in pounds per cubic inch, of the varieties of ice cream and the percent concentration of peaches in the ice cream. Assuming all conditions for inference are met, which of the following significance tests should be used to investigate whether there is convincing evidence at the 0.05 level of significance that a greater percent of peaches in the ice cream is associated with an increase in the density of the ice cream? A. A two-sample t-test for a difference between means B. A chi-square test of independence C. A linear regression t-test for slope D. A two-sample z-test for a difference between proportions E. A matched pairs t-test for a mean difference
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