After spraying your yard with a weed-killer you notice that you don't see any bees in your yard for the next few days. You know that bees are a keystone species that is critical for a healthy environment, and want to investigate if there is a connection between the weed-killer and the absence of bees.  Task: Design an

please help

This is a relevant multiple choice that I do not know how to begin with.

There are around 40 species of sea stars that are affected by sea star wasting disease. Scientists hypothesize that the disease is related to the raised water temperatures in some places and continues to kill sea stars. In this experiment, the independent variable is

Which of the following statements can be a research hypothesis? Only one answer A) The aim of the study is to find out the relationship between variables A and B B) There is a significant difference between groups C) Variable A is contingent on variable B D) Variable A significantly and positively correlated with variable B

You observe that every time your neighbor, who always wears a yellow hat, walks out his front door, he gets dive bombed by a crow. From this observation, what is a testable hypothesis? What is your prediction based on your hypothesis? Please design an experiment to test this hypothesis and prediction. You must identify the independent and dependent variables, as well as at least 2 control variables, and your experiment must contain an experimental group and a control group

solve this please, the 1st problem. with explanation

Open the Excel Spreadsheet: ACTIVITY Population Biology Data Analysis Perform data analysis for: Moose Find the "r" value for moose. Enter the "r" numerical value below. FOLLOW THESE INSTRUCTIONS OR YOUR ANSWER WILL BE MARKED WRONG AND NO CREDIT WILL BE GIVEN AFTER THE FACT: o No empty spaces before or after the number. Just type in the number. o Enter ONLY numerical values. If there is a decimal, put the number as a decimal. If the number does not have a decimal, do not put a decimal. For example, these are correct numerical entries: o 21.6 o 0.5 o 3.7 o 42 0 3 Do not wri D

The crab spider, Thomisus spectabilis, sits on flowers and preys upon visiting honeybees. Do honeybees distinguish between flowers that have crab spiders and flowers that do not? To test this, Heiling et al. (2003) gave 34 bees a choice between 2 flowers: one with, and one without a crab spider. In 24 of the 34 trials, the bees picked the flower that had the spider. In the other trials, the bees chose the spiderless flower. With these data, carry out the appropriate hypothesis test (one- or two-tailed), using the normal approximation to the binomial distribution to determine Z. For a one-tailed test, use the formula =(1-NORM.DIST(Z,0,1,TRUE) in Excel calculate P. For a two-tailed test, use the formula =2(1-NORM.DIST(Z,0,1,TRUE). State your answer for the value of P to three decimal places, and include the leading zero. Do all of the math in Excel DO NOT round the value of Z. Substitute the cell (e.g. B1) for Z in the formula for P.

6) Specifically in a control group, the variable that is not changed is the blank variable? this is a open ended question and I need help with it