Thirty-two college students, identified as having a posative attiude about Mitty Romney as compared to B. Obama in the 2012 presidentioal election, were asked to rate how trustworthy the face of M. Romeny appeared, as represented in their in their mental image of M. Romeny's face. Ratings were on a scale 0 to 7, with 0 being " not at all trustworthy" and 7 being "extremly trustworthy." here are the 32 ratings:
2.0 , 2.2 , 2.3 , 2.6 , 2.6 , 2.8 , 3.0 , 3.2 , 3.2 , 3.3 , 3.3 , 3.4, 3.6 , 3.7 , 3.7 , 3.8 , 3.9 ,3.9 , 3.9 , 3.9 , 4.1 , 4.1 , 4.2 ,4.2 ,4.6 ,4.6 , 4.7 , 4.9 , 5.0 , 5.0 , 5.3 , 5.3
a) Plot a stemplot for the data and comment.
b) Compute a 95% confidence Intraval for the mean rating? Interpret.
Thirty-two college students, identified as having a posative attiude about Mitty Romney as compared to B....
The data for 30 samples of 8 measurements each were collected from a process at Hawkeye Plastics. They’ve asked you to create an x ̅-chart and an s-chart for the process and to interpret the results for them. a) What values will be used for the centerline, upper control limit, and lower control limit of each chart? (You only need to make a table of the values to answer this question and others like it in this assignment.) b) Create...
A product has three quality characteristics. The nominal values
of these quality characteristics and their sample covariance matrix
have been determined from the analysis of 30 preliminary samples of
size n=10 as it is show in the Excel file. The sample means for
each quality characteristic for 15 additional samples of size n=10
are shown in table. Is the process in statistical control?
X2 Tz Sample number 1 2 [1.40 1.021.05] S = 1.02 1.350.98 11.05 0.98 1.20) 3.1 3.3...
Parametirc test or not:Test statistic:p-value:decision:Is There A Difference Between the Means?6.7 6.2 3.1 310.3 10 5 5.56.9 5.5 3.3 3.110.5 6.3 4.3 5.44.5 4.6 1.8 25.6 5.6 2 2.65.9 6.1 2.1 2.58 11.7 4 4.68 7.4 3.3 3.15.8 5.2 3.1 2.96 7.3 3.0 3.28.7 5.3 2.7 36 5.5 2.1 2.27.2 6.3 3.5 3.25.9 4.6 2.9 3.46 7.4 3 3.37.2 7.8 3.7 3.48.6 9.4 5.1 5.77.2 8.1 2.8 3.15.8 5.4 2.2 1.83.3 4 1.7 1.86.8 5.1 2 1.83.7 3.5 2.2 2.112...
2. (20 pts) A certain reaction was run several times using each of two catalysts, A and B. The catalysts were supposed to control the yield of an undesirable side product. Results, in units of percentage yield, for 24 runs of catalyst A and 20 runs of catalyst Bare as follows: Catalyst A 3.4 2.6 3.8 4.9 4.1 3.6 4.3 4.4 4.6 2.6 2.9 3.9 3.1 5.2 6.7 2.6 4.8 4.7 4.1 4.0 4.5 Catalyst B 3.4 6.4 3.7 3.5...
According to whichever is more appropriate, a marginal
comparison of gum types or a comparison of gum types within each
protein source, compare the best gum type (the gum type with the
highest mean rating) to each of the other gum types using pairwise
comparisons. This question asks you to compare one specific level of
a factor (in this case the best level, but in other contexts it
might be the “control” level or even the worst level) to each...
Using the data file provided with both variables, x and y, answer the following questions using Excel*: 1.Create a scatterplot with the data. Comment on direction, form, strength, outliers and/or other significant findings. 2.Use the linear model to fit a line to the data and determine the equation ỹ = b0 + b1x and Interpret b0and b1. 3.Calculate the coefficient of correlation. Discuss the strength of correlation between the explanatory and response variables. 4.Predict the value for ỹ when you...
please don't copy. thanks
Question 3. In a study measuring the height of birch trees, two types of fertilizer were used. Prior to the study 14 tree's heights were measured. 8 trees were then selected at random to receive a liquid fertilizer during the first summer of the experiment. At the end of the first year their growth was measured. While this was occurring another 6 trees were receiving a granular fertilizer. At the end first year their height was...
Please use excel to solve. Any
help would be greatly appreciated.
A B E F G 1 C D Changes in Consumer Price Index, 1960-2006 (Percent) 2 Year-Year Percent Change in Commodities CPI Year-Year Percent Change in Services CPI 3 4 5 6 7 8 Commodities% 0.9 Services% 3.4 0.6 1.7 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37...
Good Luck. (Need to show all your work to get full credit; no work, no credit) 1.For the given sample data below: a Construct a frequency distribution using six classes for a sample data that includes. Class Limits (5 pts), Class Boundaries (6 pts), Frequency (3 pts), Relative frequency (3 pts), Cumulative Frequency (3 pts), Midpoint X.5 pts), f-x-(5 pts), f. (6 pts). b. For constructed grouped data find: mean (8 pts), mode for grouped data (2 pts), modal class...
2. (25pts) Two different brands of latex (water-based) paint are being considered for use in a large construction project. To choose between the brands, one of the key factors is the time it takes the paint to dry. Engineers sampled 22 specimens of each brand and measured the drying times (in hours) of each specimen. The data collected are given in Table 1 below Specimen Brand A Brand B Specin Brand A Brand B 3.5 2.7 3.9 4.2 4.6 2.7...