library(shiny)
# Define UI for testing application
shinyUI(pageWithSidebar(
# Application title
headerPanel("Types of Error in Significance Tests"),
# Sidebar
sidebarPanel(
helpText("You will work with a population that is normally distributed, with a",
"mean of 70 and a standard deviation of 3. You can set mu0, the value",
"that the Null Hypothesis believes mu to be."),
sliderInput(inputId="mu0", "mu0, the Null's belief about mu",
value=70,min=65,max=75),
br(),
helpText("Choose the level of significance: the cut-off value alpha. If the two-sided",
"P-value is below alpha, the Null Hypotheses will be rejected."),
sliderInput(inputId="alpha","Significance level alpha",value=0.05,min=0.01,max=0.20,step=0.01),
br(),
helpText("One sample at a time, or 5000 at a time? (Your choice affects the sample",
"sizes you may select from."),
selectInput(inputId="actionType",label="One Sample or 5000:",
choices=list("Just one sample at a time, please."="one",
"Give me 5000 samples!"="fiveThousand")),
uiOutput("sizeSelect"),
br(),
helpText("When you are ready to sample, push this button:"),
actionButton("go","Take the Sample")
),
# Here comes the main panel
mainPanel(
conditionalPanel(
condition="output.go == 0",
plotOutput("initialGraph"),
HTML("<p> </p>"),
HTML("<ul>
<li>The population density curve is in red.</li>
<li>The red vertical line marks the population mean mu.</li>
<li>The black vertical line marks mu0, the value the Null believes in.</li>
<li>(When the red and black lines coincide, the Null is true.)</li>
</ul>")
),
conditionalPanel(
condition="(output.go > 0) && (output.actionType == 'one')",
plotOutput("graphSample"),
HTML("<p> </p>"),
HTML("<ul>
<li>The population density curve is in red.</li>
<li>The red line marks the population mean mu.</li>
<li>The black vertical line marks mu0, the value the Null believes in.</li>
<li>(When the red and black lines coincide, the Null is true.)</li>
<li>The histogram of the sample is in light blue.</li>
<li>The sample mean is the big blue dot.</li>
<li>The confidence interval is in green.</li>
</ul>"),
tableOutput("results")
),
conditionalPanel(
condition="(output.go > 0) && (output.actionType == 'fiveThousand')",
plotOutput("initialGraph2"),
tableOutput("summary"),
dataTableOutput("intervalFrame")
)
) # end main panel
))
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