In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer.
Is fishing better from a boat or from the shore? Pyramid Lake is located on the Paiute Indian Reservation in Nevada. Presidents, movie stars, and people who just want to catch fish go to Pyramid Lake for really large cutthroat trout. Let row B represent hours per fish caught fishing from the shore, and let row A represent hours per fish caught using a boat. The following data are paired by month from October through April.
Oct Nov Dec Jan Feb March April
B: Shore 1.5 1.9 2.0 3.2 3.9 3.6 3.3
A: Boat 1.4 1.3 1.6 2.2 3.3 3.0 3.8
a) Find (or estimate) the P-value. choose one:
P-value > 0.500
0.250 < P-value < 0.500
0.100 < P-value < 0.250
0.050 < P-value < 0.100
0.010 < P-value < 0.050
P-value < 0.010
b) Sketch the sampling distribution and show the area corresponding to the P-value.
c) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis? Are the data statistically significant at level ??
At the ? = 0.01 level, we reject the null hypothesis and conclude the data are not statistically significant.
At the ? = 0.01 level, we fail to reject the null hypothesis and conclude the data are statistically significant.
At the ? = 0.01 level, we fail to reject the null hypothesis and conclude the data are not statistically significant.
At the ? = 0.01 level, we reject the null hypothesis and conclude the data are statistically significant.
d) State your conclusion in the context of the application.
Reject the null hypothesis, there is insufficient evidence to claim a difference in population mean hours per fish between boat fishing and shore fishing.
Reject the null hypothesis, there is sufficient evidence to claim a difference in population mean hours per fish between boat fishing and shore fishing.
Fail to reject the null hypothesis, there is insufficient evidence to claim a difference in population mean hours per fish between boat fishing and shore fishing.
Fail to reject the null hypothesis, there is sufficient evidence to claim a difference in population mean hours per fish between boat fishing and shore fishing.
Question a=c
Step by stepSolved in 3 steps with 3 images
- Use the following Box-and-Whisker Plot to answer Questions 21 and 22. 6th Grade Math Test + 60 65 70 75 80 85 90 95 100 Test Score 21) Approximately how many test scores are above 78? 22) What is the median score?arrow_forwardFollowing are the GPA's of the 30 students from a certain university who participated in a track meet. Draw a dot plot to better display the data. 3.2, 2.8, 2.0, 1.9, 3.0, 3.2, 2.9, 2.2, 2.1, 4.0, 3.5, 3.0, 3.1, 2.1, 3.5 O 4.0, 3.1, 3.3, 2.8, 3.9, 3.9, 3.7, 2.4, 2.9, 3.7, 2.7, 3.0, 2.7, 2.9, 3.9 Select the correct graph below. O A. OB. XX XX XXXXX X X XX x x XX XXXXXXX x x Xx XXXXXX XXX XXXXXX x x Xx XXXX X 15 25 35 1.5 25 35 OC. OD. XX XXX XXXXXXX x x XX XX XX X X X X Xx x x XXX X 15 25 3.5 1.5 25 3.5 Click to select your answer. Prt Scn, Home End DII F3 F5 * F2 F4 F1 & #3 %24arrow_forwardUse the graph to answer the following questions. Frequency 7 6+ 5 40 Cost of Student Groceries Cost ($) a. Is this graph symmetric or skewed? 100 b. For this graph, is mean or median the best choice for the measure of center? c. For this graph, is standard deviation or IQR the best choice for the measure of variation? d. For this graph, the mean is expected to be the median. (higher than, lower than, or about the same as?)arrow_forward
- AU, BV, and CW are the medians of AABC. 12. If AP x* and PU 2x. then x = %3D 13. If BP = y + 1 and PV = y + 2, then y 2 or y = A B. 14. If CW = 2: - 5: - 12 and CP = : - 15. then and PW =arrow_forwardHow hot does it get in Death Valley? Assume that the following data are taken from a study conducted by the National Park System, of which Death Valley is a unit. The ground temperatures (°F) were taken from May to November in the vicinity of Furnace Creek. Compute the median for these ground temperatures. Round your answer to the nearest tenth. 147 152 166 171 188 179 187 188 179 179 166 165 152 143 Group of answer choices 159.0 187.5 166.0 337.0 168.5arrow_forwardAnother measure of central tendency that is rarely used but is easy to calculate is the midrange. It can be found using the formula below. A consumer testing service obtained the mileages (in miles per gallon) shown in the table to the right in five test runs performed with three types of compact cars. Each car manufacturer wants to advertize that its car performed the best in this test. Which of the car manufacturers of cars A, B, and C would prefer to use the midrange statistic in their ads? Explain your reasoning. Midrange= (Maximum data entry) + (Minimum data entry) 2 A 28 33 The manufacturer of (Type an integer or a decimal.) 28 29 35 Car MPG B 32 30 32 25 32 ... C 30 33 24 33 31 would prefer to use the midrange, since their car's midrange of mpg is the of the three models.arrow_forward
- Please indicate whether the above scatter plot indicates an r value that is: a. close to r=-1 b. close to r=+1 с. clearly negative but not near r = -1 d. clearly positive but not near r = +1arrow_forwardQuestion 8 The following data set contains the number of minutes spent by each of 20 students in the class to write the assignment. 42 48 59 61 62 62 64 65 66 68 68 70 71 71 72 72 78 79 84 88 a. Find the median, the first and the third quartiles, and the interquartile range. b. Find the left outer fence, left inner fence, right inner fence, and right outer fence. c. Find the length of left whisker and the length of right whisker in the box – whisker plot. d. List all outliers (if any) in the last row. If there are no outliers state “none”.List all extreme values (if any) in the last row. If there are no extreme values state “none”. Show work for the calculations for Part B and Part C.arrow_forwardFor a set of observations, Q1 80 and Q3 = 130. Values greater than and less than are possible outliers.arrow_forward
- Answer all questionsarrow_forwardLet p be the population proportion for the following condition. Find the point estimates for p and q. A study of 4983 adults from country A, 3036 think mainstream media is more interested in making money than in telling the truth. The point estimate for p, p, is nothing. (Round to three decimal places as needed.)arrow_forwardLet p be the population proportion for the following condition. Find the point estimates for p and q. In a survey of 1797 adults from country A, 670 said they were not confident that they food they eat in country A is safe.arrow_forward
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman