Question

Crickets make their chirping noise by sliding one wing cover very rapidly back and forth over the other. Biologists have long been aware of a linear relationship between temperature and the frequency with which a cricket chirps, although the slope and intercept varies between species. Listed below are 15 frequency- temperature observations recorded for the striped ground cricket, Nemobius fasciatus fasciatus. Find a 95% Confidence Interval for mean when x= 16.

X Chirps Y Temp (F)

20 88.6

16 71.6

19.8 93.3

18.4 84.3

17.1 80.6

15.5 75.2

14.7 69.7

17.1 82

15.4 69.4

16.2 83.3

15 79.6

17.2 82.6

16 80.6

17 83.5

14.4 76.3

From scatter plot: y = 25.23 + 3.29x

Answer #1

Cricket Chirps
The dataset shows 15 observations of the relationship between
cricket chirps (measured in chirps per second) and outside ground
temperature (in Fahrenheit).
1. Create a scatterplot by putting chirps on the vertical axis
and temperature on the horizontal axis. Be sure to properly label
the scatterplot with a title, axes titles, and the proper units of
the variables.
2. Estimate the following relationship:
?h????=?0+?1???????????(Chirps)
̂=b_0+b_1 Temperature.
3. Interpret the slope in the context of the problem.
4. Interpret...

Anyone who has been outdoors on a summer evening has probably
heard crickets. Did you know that it is possible to use the cricket
as a thermometer? Crickets tend to chirp more frequently as
temperatures increase. This phenomenon was studied in detail by
George W. Pierce, a physics professor at Harvard. In the following
data, x is a random variable representing chirps per
second and y is a random variable representing temperature
(°F).
x
20.2
15.0
20.7
18.3
17.3
15.5...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 3 minutes ago

asked 7 minutes ago

asked 13 minutes ago

asked 26 minutes ago

asked 29 minutes ago

asked 31 minutes ago

asked 35 minutes ago

asked 41 minutes ago

asked 43 minutes ago

asked 55 minutes ago

asked 1 hour ago

asked 1 hour ago