/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q.2.76 Python eggs (1.1) How is the hat... [FREE SOLUTION] | 91影视

91影视

Python eggs (1.1) How is the hatching of water python eggs influenced by the temperature of the snake鈥檚 nest? Researchers assigned newly laid eggs to one of three temperatures: hot, neutral, or cold. Hot duplicates the extra warmth provided by the mother python, and cold duplicates the absence of the mother. Here are the data on the number of eggs and the number that hatched:

(a) Make a two-way table of temperature by outcome (hatched or not).

(b) Calculate the percent of eggs in each group that hatched. The researchers believed that eggs would not hatch in cold water. Do the data support that belief?

Short Answer

Expert verified
  1. Table showing two-way temperature data by outcome (hatched or not)ColdNeutralHotHatched163875Not Hatched111829Total2756104
  2. Temperature affects hatching, as it is clear that it increases with it. In other words, the cold nest does not prevent the eggs from hatching, but it reduces their chances of hatching.

Step by step solution

01

Part (a) Step 1: Given information 

Given in the question that a table

02

Part (a) Step 2: Solution

Two-way tables are a way of displaying frequencies for two types of information collected from a single population.

One variety is shown in rows while another is shown in columns.

By using the table below, you can define the probability associated with different outcomes involving those two categories.

The below table represents the temperature by outcome (hatched or not).

ColdNeutralHotHatched163875Not Hatched111829Total2756104

03

Part (b) Step 1: Given information

Given in the question that a table

04

Part (b) Step 2: Solution

From each group of eggs in the cold nest, the following number of eggs hatched:

162710059.26%

In the natural nest.

385610067.86%

In hot nest is

7510410072.12%

As a consequence of the above calculation, it becomes obvious that hatching increases with an increase in temperature.

Therefore, the cold nest does not prevent hatching; however, it reduces the possibility of hatching.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Use Table A to 铿乶d the proportion of observations from the standard Normal distribution that satis铿乪s each of the following statements. In each case, sketch a standard Normal curve and shade the area under the curve that is the answer to the question. Use your calculator or the Normal Curve applet to check your answers.

More Table A practice

(a) zis between 鈭1.33and 1.65

(b) zis between 0.50and1.79

Old folks Here is a stem plot of the percent of residents aged 65 and older in the50states:

(a) Find and interpret the percentile for Colorado, which has 10.1%of its residents aged 65or older.

(b) Find and interpret the percentile for Rhode Island, with 13.9%of residents aged 65or older.

(c) Which of these two states is more unusual? Explain.

Shoes How many pairs of shoes do students have? Do girls have more shoes than boys? Here are data from a random sample of 20 female and 20 male students at a large high school:

(a) Find and interpret the percentile in the female distribution for the girl with 22pairs of shoes.

(b) Find and interpret the percentile in the male distribution for the boy with 22 pairs of shoes.

(c) Who is more unusual: the girl with22 pairs of shoes or the boy with 22 pairs of shoes? Explain.

Each year, about 1.5million college-bound high school juniors take the PSAT. In a recent year, the mean score on the Critical Reading test was 46.9and the standard deviation was10.9. Nationally, 5.2%of test takers earned a score of 65 or higher on the Critical Reading test鈥檚 20to 80scale.9

PSAT scores Scott was one of 50junior boys to take the PSAT at his school. He scored 64on the Critical Reading test. This placed Scott at the 68th percentile within the group of boys. Looking at all 50boys鈥 Critical Reading scores, the mean was 58.2and the standard deviation was 9.4

(a) Write a sentence or two comparing Scott鈥檚 percentile among the national group of test-takers and among the 50boys at his school.

(b) Calculate and compare Scott鈥檚 z-score among these same two groups of test-takers.

T2.11. As part of the President's Challenge, students can attempt to earn the Presidential Physical Fitness Award or the National Physical Fitness Award by meeting qualifying standards in five events: curl-ups, shuttle run, sit and reach, one-mile run, and pull-ups. The qualifying standards are based on the 1985School Population Fitness Survey. For the Presidential award, the standard for each event is the 85thpercentile of the results for a specific age group and gender among students who participated in the 1985survey. For the National award, the standard is the 50th percentile. To win either award, a student must meet the qualifying standard for all five events.
Jane, who is 9years old, did 40curl-ups in one minute. Matt, who is 12years old, also did 40curl-ups in one minute. The qualifying standard for the Presidential award is 39curl-ups for Jane and 50curl-ups for Matt. For the National award, the standards are 30and 40, respectively.
(a) Compare Jane's and Matt's performances using percentiles. Explain in language simple enough for someone who knows little statistics to understand.
(b) Who has the higher standardized value (z-score), Jane or Matt? Justify your answer.

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.