Eclosion refers to the emergence of an adult insect from an egg. The following data gives eclosion rates when nymphs were exposed to heat for various durations. Duration (d) 012351015Sample size 120 40 47 44 46 42 10# Emerged: 10138444038357 Compute the test statistic value. (Round your answer to three decimal places.) š2
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Eclosion refers to the emergence of an adult insect from an egg. The following data gives eclosion rates when nymphs were exposed to heat for various durations. Duration (d) 0 1 2 3 5 10 15 Sample size 126 42 47 44 46 42 10 Emerged 107 38 44 40 38 35 7 Carry out a chi-squared test to decide whether it is plausible that eclosion rate does not depend on exposure duration. a. State the appropriate hypotheses. b. Calculate the test statistic value. (X^2)
Lien L.
Python eggs $(1.1)$ How is the hatching of water python eggs influenced by the temperature of the snake's 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: 16 (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?
Modeling Distributions of Data
Describing Location in a Distribution
The mean incubation time of a fertilized egg kept at a certain temperature is 25 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 1 day. Complete the parts below: The probability that a randomly selected fertilized egg takes over 26 days to hatch is 0.1587. Interpret this probability: Select the correct choice below and fill in the answer box to complete your choice. A. In every group of 100 fertilized eggs, eggs would be expected to hatch in more than 26 days. B. If 100 fertilized eggs were randomly selected, exactly would be expected to hatch on day 26. C. If 100 fertilized eggs were randomly selected, 16 of them would be expected to take more than 26 days to hatch. d) Find and interpret the probability that a randomly selected fertilized egg hatches between 23 and 25 days. The probability that a randomly selected fertilized egg hatches between 23 and 25 days is 0.4772. Interpret this probability: Select the correct choice below and fill in the answer box to complete your choice. A. If 100 fertilized eggs were randomly selected, exactly would be expected to hatch on day 23 or on day 25. B. In every group of 100 fertilized eggs, eggs would be expected to hatch between 23 and 25 days. C. If 100 fertilized eggs were randomly selected, of them would be expected to hatch between 23 and 25 days.
Joanna Q.
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