Introduction to non-Calculus based Statistics Home work 7

Name:

Section: _______

Complete your answers logically in the spaces provided. Give final answers/conclusions in complete sentences in context of the question. 1. Carry out complete 5 steps of hypothesis testing using traditional method and alongside that, show p-value estimates that confirm your conclusions on any ttests that are carried out for this question. Below is data on number of tree species in 12 unlogged forest plots and 9 similar plots logged 8 years ago. Unlogged Logged 22 17 18 4 22 18 20 14 15 18 21 15 13 15 13 10 19 12 13 19 15

a. Test at the 5% significant level that mean number of species in logged plots is significantly lower than the mean number of species in unlogged plots after 8 years. (5 marks)

Home work 7

1

MATH1050 Y –B FW2012

Introduction to non-Calculus based Statistics

b. Identify the outlier. If it is removed, does your conclusion change for the 5% significant level test in a. (carry out the final test again assuming no change in your conclusion about your test on variances in part a.) (5 marks)

2. Exercises 8-3; Question number 14 of the text (Triola). The Alberta government records freezing dates for over a hundred locations around the province. Based on average last frost dates for spring, a researcher has proposed dividing the province into early last-frost locations and late last-frost locations. Refer to Data set 17 of the text book in Appendix B. (in the CD). Use the day of year columns to test, at the 0.01 significance level, the claim that the late last frost locations have a different mean date for last spring frost than the early last-frost locations.(Use calculators to find the mean, standard deviation and variances etc)

Home work 7

2

MATH1050 Y –B FW2012

Introduction to non-Calculus based Statistics

a. Conduct the hypothesis test using the traditional method. (5 marks)

...Name: Lindsey Weber
Exercise2: Skeletal Muscle Physiology: Activity 5: Fatigue in Isolated Skeletal Muscle Lab Report
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1. When skeletal muscle twitches fuse so that the peaks and valleys of each twitch become indistinguishable from each
other, the muscle is in a state known as
You correctly answered: d. complete (fused) tetanus.
2. When the stimulus...

...Exercise2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 20% by answering 1 out of 5 questions correctly. 1. Skeletal muscles are connected to bones by Your answer : c. ligaments. Correct answer: b. tendons. 2. Skeletal muscles are composed of hundreds to thousands of individual cells called Your answer : b. myofibrils. Correct answer: c. fibers. 3. The term...

...Web Calculator Exercise2
Daniel Alvarado
Liberty University
Z test & One sample t-test
1. A researcher is interested in whether students who attend private high schools have higher average SAT Scores than students in the general population. A random sample of 90 students at a private high school is tested and and a mean SAT score of 1030 is obtained. The average score for public high school student is 1000 (σ= 200).
a. Is this a one- or two...

...Exercise2: Skeletal Muscle Physiology: Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. During a single twitch of a skeletal muscle You correctly answered: b. maximal force is never achieved. 2. When a skeletal muscle is repetitively stimulated, twitches can overlap each other and result in a stronger muscle...

...In dealing with non-pooled statistics in two different scenarios, or samples in this case. One is Standard Deviations and Assumed Equal. You can be somewhat certain that the populations have nearly equal standard deviations, and then you should use a pooled-t method. If you were really uncertain then you would use a non-pooled t-method. And with the SRS’s separate samples or normal populations, large samples are not satisfied; then the non-pooled-t methods should not be used.
As for two...

...wins and the result of this difference: Difference (number of runs scored) - (number of runs allowed). The statistics are from a recent year, and the teams are NY—Yankees, Toronto, Boston, Cleveland, Texas, Houston, San Francisco, and Kansas City.
2.
Difference
163
55
-5
88
51
16
-214
Wins
0.599
0.537
0.531
0.481
0.494
0.506
0.383
Construct a scatter plot, find the value of the linear correlation coefficient r, and find the critical values of r from Table VI, Appendix A, p....

...Both Adonis and Attis may be considered "resurrection gods." True
What are the two names for Aphrodite that are linked with the islands of Cythera and Cyprus? (Spell them carefully.) Cytherea and Cypris
According to one tradition, Aphrodite is the daughter of Zeus and _____. Dione
What is the distinction between Aphrodite Urania and Aphrodite Pandemos? Urania: sprung from Uranus alone ; Pandemos: sprung from Zeus and Dione
According to our textbook, Aphrodite is the goddess...

...Chapter 6Activity6-26-3
Please View Videos or discussions in Mastering Biology relating to Ch6 Sec 2 and 3
http://www.pearsonmylabandmastering.com/northamerica/masteringbiology/
Use of Test Books and notes will be very helpful.
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
MULTIPLE CHOICE. Choose the one alternative that best completes the...